diff --git a/.gitignore b/.gitignore
index cf696180..afe3f7ad 100644
--- a/.gitignore
+++ b/.gitignore
@@ -9,4 +9,5 @@ src/services/**/terraform
 **/.env
 src/services/.secrets/**
 !src/services/.secrets/README.md
-.dvc
\ No newline at end of file
+.dvc
+src/experiments/protomaps/boundaries
\ No newline at end of file
diff --git a/package-lock.json b/package-lock.json
index 67b14126..daedfb89 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -20,6 +20,7 @@
 				"@fastify/middie": "^8.0.0",
 				"@fastify/swagger": "^8.0.0",
 				"@fastify/swagger-ui": "^1.1.0",
+				"@fastify/websocket": "^7.1.2",
 				"@svizzle/file": "^0.12.0",
 				"@svizzle/utils": "^0.16.0",
 				"bcrypt": "^5.0.1",
@@ -32,7 +33,9 @@
 				"dap_dv_backends_utils": "github:nestauk/dap_dv_backends_utils#v0.0.2",
 				"dotenv": "^16.0.3",
 				"express": "^4.18.1",
+				"express-ws": "^5.0.2",
 				"fastify": "^4.2.1",
+				"fastify-socket.io": "^4.0.0",
 				"lamb": "^0.60.0",
 				"neo4j-driver": "^5.0.1",
 				"node-fetch": "^3.2.10",
@@ -40,6 +43,8 @@
 				"posix": "^4.2.0",
 				"redis": "^4.2.0",
 				"rxjs": "^7.5.6",
+				"socket.io": "^4.6.1",
+				"socket.io-client": "^4.6.1",
 				"undici": "^4.13.0",
 				"uuid": "^8.3.2",
 				"winston": "^3.5.1",
@@ -1859,6 +1864,15 @@
 				"openapi-types": "^12.0.2"
 			}
 		},
+		"node_modules/@fastify/websocket": {
+			"version": "7.1.2",
+			"resolved": "https://registry.npmjs.org/@fastify/websocket/-/websocket-7.1.2.tgz",
+			"integrity": "sha512-OBaPR3KVkDmhJpCy+RtM8CwwV67ieRRbvWtpHqRNoMt+AnHLBiNmrTwHs3/DKjmnI1cqdGTaQ+NhKtDtkk1l/Q==",
+			"dependencies": {
+				"fastify-plugin": "^4.0.0",
+				"ws": "^8.0.0"
+			}
+		},
 		"node_modules/@humanwhocodes/config-array": {
 			"version": "0.9.5",
 			"resolved": "https://registry.npmjs.org/@humanwhocodes/config-array/-/config-array-0.9.5.tgz",
@@ -1970,6 +1984,11 @@
 				"@redis/client": "^1.0.0"
 			}
 		},
+		"node_modules/@socket.io/component-emitter": {
+			"version": "3.1.0",
+			"resolved": "https://registry.npmjs.org/@socket.io/component-emitter/-/component-emitter-3.1.0.tgz",
+			"integrity": "sha512-+9jVqKhRSpsc591z5vX+X5Yyw+he/HCB4iQ/RYxw35CEPaY1gnsNE43nf9n9AaYjAQrTiI/mOwKUKdUs9vf7Xg=="
+		},
 		"node_modules/@svizzle/file": {
 			"version": "0.12.0",
 			"resolved": "https://registry.npmjs.org/@svizzle/file/-/file-0.12.0.tgz",
@@ -1988,6 +2007,24 @@
 				"lamb": "^0.60.0"
 			}
 		},
+		"node_modules/@types/cookie": {
+			"version": "0.4.1",
+			"resolved": "https://registry.npmjs.org/@types/cookie/-/cookie-0.4.1.tgz",
+			"integrity": "sha512-XW/Aa8APYr6jSVVA1y/DEIZX0/GMKLEVekNG727R8cs56ahETkRAy/3DR7+fJyh7oUgGwNQaRfXCun0+KbWY7Q=="
+		},
+		"node_modules/@types/cors": {
+			"version": "2.8.13",
+			"resolved": "https://registry.npmjs.org/@types/cors/-/cors-2.8.13.tgz",
+			"integrity": "sha512-RG8AStHlUiV5ysZQKq97copd2UmVYw3/pRMLefISZ3S1hK104Cwm7iLQ3fTKx+lsUH2CE8FlLaYeEA2LSeqYUA==",
+			"dependencies": {
+				"@types/node": "*"
+			}
+		},
+		"node_modules/@types/node": {
+			"version": "18.14.4",
+			"resolved": "https://registry.npmjs.org/@types/node/-/node-18.14.4.tgz",
+			"integrity": "sha512-VhCw7I7qO2X49+jaKcAUwi3rR+hbxT5VcYF493+Z5kMLI0DL568b7JI4IDJaxWFH0D/xwmGJNoXisyX+w7GH/g=="
+		},
 		"node_modules/@ungap/promise-all-settled": {
 			"version": "1.1.2",
 			"resolved": "https://registry.npmjs.org/@ungap/promise-all-settled/-/promise-all-settled-1.1.2.tgz",
@@ -2253,6 +2290,14 @@
 				}
 			]
 		},
+		"node_modules/base64id": {
+			"version": "2.0.0",
+			"resolved": "https://registry.npmjs.org/base64id/-/base64id-2.0.0.tgz",
+			"integrity": "sha512-lGe34o6EHj9y3Kts9R4ZYs/Gr+6N7MCaMlIFA3F1R2O5/m7K06AxfSeO5530PEERE6/WyEg3lsuyw4GHlPZHog==",
+			"engines": {
+				"node": "^4.5.0 || >= 5.9"
+			}
+		},
 		"node_modules/bcrypt": {
 			"version": "5.0.1",
 			"resolved": "https://registry.npmjs.org/bcrypt/-/bcrypt-5.0.1.tgz",
@@ -2852,6 +2897,94 @@
 				"node": ">= 0.8"
 			}
 		},
+		"node_modules/engine.io": {
+			"version": "6.4.1",
+			"resolved": "https://registry.npmjs.org/engine.io/-/engine.io-6.4.1.tgz",
+			"integrity": "sha512-JFYQurD/nbsA5BSPmbaOSLa3tSVj8L6o4srSwXXY3NqE+gGUNmmPTbhn8tjzcCtSqhFgIeqef81ngny8JM25hw==",
+			"dependencies": {
+				"@types/cookie": "^0.4.1",
+				"@types/cors": "^2.8.12",
+				"@types/node": ">=10.0.0",
+				"accepts": "~1.3.4",
+				"base64id": "2.0.0",
+				"cookie": "~0.4.1",
+				"cors": "~2.8.5",
+				"debug": "~4.3.1",
+				"engine.io-parser": "~5.0.3",
+				"ws": "~8.11.0"
+			},
+			"engines": {
+				"node": ">=10.0.0"
+			}
+		},
+		"node_modules/engine.io-client": {
+			"version": "6.4.0",
+			"resolved": "https://registry.npmjs.org/engine.io-client/-/engine.io-client-6.4.0.tgz",
+			"integrity": "sha512-GyKPDyoEha+XZ7iEqam49vz6auPnNJ9ZBfy89f+rMMas8AuiMWOZ9PVzu8xb9ZC6rafUqiGHSCfu22ih66E+1g==",
+			"dependencies": {
+				"@socket.io/component-emitter": "~3.1.0",
+				"debug": "~4.3.1",
+				"engine.io-parser": "~5.0.3",
+				"ws": "~8.11.0",
+				"xmlhttprequest-ssl": "~2.0.0"
+			}
+		},
+		"node_modules/engine.io-client/node_modules/ws": {
+			"version": "8.11.0",
+			"resolved": "https://registry.npmjs.org/ws/-/ws-8.11.0.tgz",
+			"integrity": "sha512-HPG3wQd9sNQoT9xHyNCXoDUa+Xw/VevmY9FoHyQ+g+rrMn4j6FB4np7Z0OhdTgjx6MgQLK7jwSy1YecU1+4Asg==",
+			"engines": {
+				"node": ">=10.0.0"
+			},
+			"peerDependencies": {
+				"bufferutil": "^4.0.1",
+				"utf-8-validate": "^5.0.2"
+			},
+			"peerDependenciesMeta": {
+				"bufferutil": {
+					"optional": true
+				},
+				"utf-8-validate": {
+					"optional": true
+				}
+			}
+		},
+		"node_modules/engine.io-parser": {
+			"version": "5.0.6",
+			"resolved": "https://registry.npmjs.org/engine.io-parser/-/engine.io-parser-5.0.6.tgz",
+			"integrity": "sha512-tjuoZDMAdEhVnSFleYPCtdL2GXwVTGtNjoeJd9IhIG3C1xs9uwxqRNEu5WpnDZCaozwVlK/nuQhpodhXSIMaxw==",
+			"engines": {
+				"node": ">=10.0.0"
+			}
+		},
+		"node_modules/engine.io/node_modules/cookie": {
+			"version": "0.4.2",
+			"resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.2.tgz",
+			"integrity": "sha512-aSWTXFzaKWkvHO1Ny/s+ePFpvKsPnjc551iI41v3ny/ow6tBG5Vd+FuqGNhh1LxOmVzOlGUriIlOaokOvhaStA==",
+			"engines": {
+				"node": ">= 0.6"
+			}
+		},
+		"node_modules/engine.io/node_modules/ws": {
+			"version": "8.11.0",
+			"resolved": "https://registry.npmjs.org/ws/-/ws-8.11.0.tgz",
+			"integrity": "sha512-HPG3wQd9sNQoT9xHyNCXoDUa+Xw/VevmY9FoHyQ+g+rrMn4j6FB4np7Z0OhdTgjx6MgQLK7jwSy1YecU1+4Asg==",
+			"engines": {
+				"node": ">=10.0.0"
+			},
+			"peerDependencies": {
+				"bufferutil": "^4.0.1",
+				"utf-8-validate": "^5.0.2"
+			},
+			"peerDependenciesMeta": {
+				"bufferutil": {
+					"optional": true
+				},
+				"utf-8-validate": {
+					"optional": true
+				}
+			}
+		},
 		"node_modules/entities": {
 			"version": "2.2.0",
 			"resolved": "https://registry.npmjs.org/entities/-/entities-2.2.0.tgz",
@@ -3120,6 +3253,40 @@
 				"node": ">= 0.10.0"
 			}
 		},
+		"node_modules/express-ws": {
+			"version": "5.0.2",
+			"resolved": "https://registry.npmjs.org/express-ws/-/express-ws-5.0.2.tgz",
+			"integrity": "sha512-0uvmuk61O9HXgLhGl3QhNSEtRsQevtmbL94/eILaliEADZBHZOQUAiHFrGPrgsjikohyrmSG5g+sCfASTt0lkQ==",
+			"dependencies": {
+				"ws": "^7.4.6"
+			},
+			"engines": {
+				"node": ">=4.5.0"
+			},
+			"peerDependencies": {
+				"express": "^4.0.0 || ^5.0.0-alpha.1"
+			}
+		},
+		"node_modules/express-ws/node_modules/ws": {
+			"version": "7.5.9",
+			"resolved": "https://registry.npmjs.org/ws/-/ws-7.5.9.tgz",
+			"integrity": "sha512-F+P9Jil7UiSKSkppIiD94dN07AwvFixvLIj1Og1Rl9GGMuNipJnV9JzjD6XuqmAeiswGvUmNLjr5cFuXwNS77Q==",
+			"engines": {
+				"node": ">=8.3.0"
+			},
+			"peerDependencies": {
+				"bufferutil": "^4.0.1",
+				"utf-8-validate": "^5.0.2"
+			},
+			"peerDependenciesMeta": {
+				"bufferutil": {
+					"optional": true
+				},
+				"utf-8-validate": {
+					"optional": true
+				}
+			}
+		},
 		"node_modules/express/node_modules/debug": {
 			"version": "2.6.9",
 			"resolved": "https://registry.npmjs.org/debug/-/debug-2.6.9.tgz",
@@ -3233,6 +3400,22 @@
 			"resolved": "https://registry.npmjs.org/fastify-plugin/-/fastify-plugin-4.3.0.tgz",
 			"integrity": "sha512-M3+i368lV0OYTJ5TfClIoPKEKSOF7112iiPdwgfSR0gN98BjA1Nk+c6oBHtfcVt9KiMxl+EQKHC1QNWo3ZOpYQ=="
 		},
+		"node_modules/fastify-socket.io": {
+			"version": "4.0.0",
+			"resolved": "https://registry.npmjs.org/fastify-socket.io/-/fastify-socket.io-4.0.0.tgz",
+			"integrity": "sha512-j5mgvHZpQ0Iiz9HyKwGdLOQGjFKH/6KOwx8esxCIBkIjtiQkdC8e4J1xX4JAMISLfTJOY9EHQG/1MmU/9cXaog==",
+			"dependencies": {
+				"fastify-plugin": "^3.0.0"
+			},
+			"peerDependencies": {
+				"socket.io": "^4.4.0"
+			}
+		},
+		"node_modules/fastify-socket.io/node_modules/fastify-plugin": {
+			"version": "3.0.1",
+			"resolved": "https://registry.npmjs.org/fastify-plugin/-/fastify-plugin-3.0.1.tgz",
+			"integrity": "sha512-qKcDXmuZadJqdTm6vlCqioEbyewF60b/0LOFCcYN1B6BIZGlYJumWWOYs70SFYLDAH4YqdE1cxH/RKMG7rFxgA=="
+		},
 		"node_modules/fastq": {
 			"version": "1.13.0",
 			"resolved": "https://registry.npmjs.org/fastq/-/fastq-1.13.0.tgz",
@@ -4980,6 +5163,76 @@
 				"semver": "bin/semver.js"
 			}
 		},
+		"node_modules/socket.io": {
+			"version": "4.6.1",
+			"resolved": "https://registry.npmjs.org/socket.io/-/socket.io-4.6.1.tgz",
+			"integrity": "sha512-KMcaAi4l/8+xEjkRICl6ak8ySoxsYG+gG6/XfRCPJPQ/haCRIJBTL4wIl8YCsmtaBovcAXGLOShyVWQ/FG8GZA==",
+			"dependencies": {
+				"accepts": "~1.3.4",
+				"base64id": "~2.0.0",
+				"debug": "~4.3.2",
+				"engine.io": "~6.4.1",
+				"socket.io-adapter": "~2.5.2",
+				"socket.io-parser": "~4.2.1"
+			},
+			"engines": {
+				"node": ">=10.0.0"
+			}
+		},
+		"node_modules/socket.io-adapter": {
+			"version": "2.5.2",
+			"resolved": "https://registry.npmjs.org/socket.io-adapter/-/socket.io-adapter-2.5.2.tgz",
+			"integrity": "sha512-87C3LO/NOMc+eMcpcxUBebGjkpMDkNBS9tf7KJqcDsmL936EChtVva71Dw2q4tQcuVC+hAUy4an2NO/sYXmwRA==",
+			"dependencies": {
+				"ws": "~8.11.0"
+			}
+		},
+		"node_modules/socket.io-adapter/node_modules/ws": {
+			"version": "8.11.0",
+			"resolved": "https://registry.npmjs.org/ws/-/ws-8.11.0.tgz",
+			"integrity": "sha512-HPG3wQd9sNQoT9xHyNCXoDUa+Xw/VevmY9FoHyQ+g+rrMn4j6FB4np7Z0OhdTgjx6MgQLK7jwSy1YecU1+4Asg==",
+			"engines": {
+				"node": ">=10.0.0"
+			},
+			"peerDependencies": {
+				"bufferutil": "^4.0.1",
+				"utf-8-validate": "^5.0.2"
+			},
+			"peerDependenciesMeta": {
+				"bufferutil": {
+					"optional": true
+				},
+				"utf-8-validate": {
+					"optional": true
+				}
+			}
+		},
+		"node_modules/socket.io-client": {
+			"version": "4.6.1",
+			"resolved": "https://registry.npmjs.org/socket.io-client/-/socket.io-client-4.6.1.tgz",
+			"integrity": "sha512-5UswCV6hpaRsNg5kkEHVcbBIXEYoVbMQaHJBXJCyEQ+CiFPV1NIOY0XOFWG4XR4GZcB8Kn6AsRs/9cy9TbqVMQ==",
+			"dependencies": {
+				"@socket.io/component-emitter": "~3.1.0",
+				"debug": "~4.3.2",
+				"engine.io-client": "~6.4.0",
+				"socket.io-parser": "~4.2.1"
+			},
+			"engines": {
+				"node": ">=10.0.0"
+			}
+		},
+		"node_modules/socket.io-parser": {
+			"version": "4.2.2",
+			"resolved": "https://registry.npmjs.org/socket.io-parser/-/socket.io-parser-4.2.2.tgz",
+			"integrity": "sha512-DJtziuKypFkMMHCm2uIshOYC7QaylbtzQwiMYDuCKy3OPkjLzu4B2vAhTlqipRHHzrI0NJeBAizTK7X+6m1jVw==",
+			"dependencies": {
+				"@socket.io/component-emitter": "~3.1.0",
+				"debug": "~4.3.1"
+			},
+			"engines": {
+				"node": ">=10.0.0"
+			}
+		},
 		"node_modules/sonic-boom": {
 			"version": "3.0.0",
 			"resolved": "https://registry.npmjs.org/sonic-boom/-/sonic-boom-3.0.0.tgz",
@@ -5387,6 +5640,34 @@
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 			"integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
 		},
+		"node_modules/ws": {
+			"version": "8.12.1",
+			"resolved": "https://registry.npmjs.org/ws/-/ws-8.12.1.tgz",
+			"integrity": "sha512-1qo+M9Ba+xNhPB+YTWUlK6M17brTut5EXbcBaMRN5pH5dFrXz7lzz1ChFSUq3bOUl8yEvSenhHmYUNJxFzdJew==",
+			"engines": {
+				"node": ">=10.0.0"
+			},
+			"peerDependencies": {
+				"bufferutil": "^4.0.1",
+				"utf-8-validate": ">=5.0.2"
+			},
+			"peerDependenciesMeta": {
+				"bufferutil": {
+					"optional": true
+				},
+				"utf-8-validate": {
+					"optional": true
+				}
+			}
+		},
+		"node_modules/xmlhttprequest-ssl": {
+			"version": "2.0.0",
+			"resolved": "https://registry.npmjs.org/xmlhttprequest-ssl/-/xmlhttprequest-ssl-2.0.0.tgz",
+			"integrity": "sha512-QKxVRxiRACQcVuQEYFsI1hhkrMlrXHPegbbd1yn9UHOmRxY+si12nQYzri3vbzt8VdTTRviqcKxcyllFas5z2A==",
+			"engines": {
+				"node": ">=0.4.0"
+			}
+		},
 		"node_modules/xstate": {
 			"version": "4.32.1",
 			"resolved": "https://registry.npmjs.org/xstate/-/xstate-4.32.1.tgz",
@@ -7058,6 +7339,15 @@
 				"openapi-types": "^12.0.2"
 			}
 		},
+		"@fastify/websocket": {
+			"version": "7.1.2",
+			"resolved": "https://registry.npmjs.org/@fastify/websocket/-/websocket-7.1.2.tgz",
+			"integrity": "sha512-OBaPR3KVkDmhJpCy+RtM8CwwV67ieRRbvWtpHqRNoMt+AnHLBiNmrTwHs3/DKjmnI1cqdGTaQ+NhKtDtkk1l/Q==",
+			"requires": {
+				"fastify-plugin": "^4.0.0",
+				"ws": "^8.0.0"
+			}
+		},
 		"@humanwhocodes/config-array": {
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 			"resolved": "https://registry.npmjs.org/@humanwhocodes/config-array/-/config-array-0.9.5.tgz",
@@ -7141,6 +7431,11 @@
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 			"requires": {}
 		},
+		"@socket.io/component-emitter": {
+			"version": "3.1.0",
+			"resolved": "https://registry.npmjs.org/@socket.io/component-emitter/-/component-emitter-3.1.0.tgz",
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+		},
 		"@svizzle/file": {
 			"version": "0.12.0",
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@@ -7159,6 +7454,24 @@
 				"lamb": "^0.60.0"
 			}
 		},
+		"@types/cookie": {
+			"version": "0.4.1",
+			"resolved": "https://registry.npmjs.org/@types/cookie/-/cookie-0.4.1.tgz",
+			"integrity": "sha512-XW/Aa8APYr6jSVVA1y/DEIZX0/GMKLEVekNG727R8cs56ahETkRAy/3DR7+fJyh7oUgGwNQaRfXCun0+KbWY7Q=="
+		},
+		"@types/cors": {
+			"version": "2.8.13",
+			"resolved": "https://registry.npmjs.org/@types/cors/-/cors-2.8.13.tgz",
+			"integrity": "sha512-RG8AStHlUiV5ysZQKq97copd2UmVYw3/pRMLefISZ3S1hK104Cwm7iLQ3fTKx+lsUH2CE8FlLaYeEA2LSeqYUA==",
+			"requires": {
+				"@types/node": "*"
+			}
+		},
+		"@types/node": {
+			"version": "18.14.4",
+			"resolved": "https://registry.npmjs.org/@types/node/-/node-18.14.4.tgz",
+			"integrity": "sha512-VhCw7I7qO2X49+jaKcAUwi3rR+hbxT5VcYF493+Z5kMLI0DL568b7JI4IDJaxWFH0D/xwmGJNoXisyX+w7GH/g=="
+		},
 		"@ungap/promise-all-settled": {
 			"version": "1.1.2",
 			"resolved": "https://registry.npmjs.org/@ungap/promise-all-settled/-/promise-all-settled-1.1.2.tgz",
@@ -7357,6 +7670,11 @@
 			"resolved": "https://registry.npmjs.org/base64-js/-/base64-js-1.5.1.tgz",
 			"integrity": "sha512-AKpaYlHn8t4SVbOHCy+b5+KKgvR4vrsD8vbvrbiQJps7fKDTkjkDry6ji0rUJjC0kzbNePLwzxq8iypo41qeWA=="
 		},
+		"base64id": {
+			"version": "2.0.0",
+			"resolved": "https://registry.npmjs.org/base64id/-/base64id-2.0.0.tgz",
+			"integrity": "sha512-lGe34o6EHj9y3Kts9R4ZYs/Gr+6N7MCaMlIFA3F1R2O5/m7K06AxfSeO5530PEERE6/WyEg3lsuyw4GHlPZHog=="
+		},
 		"bcrypt": {
 			"version": "5.0.1",
 			"resolved": "https://registry.npmjs.org/bcrypt/-/bcrypt-5.0.1.tgz",
@@ -7796,6 +8114,61 @@
 			"resolved": "https://registry.npmjs.org/encodeurl/-/encodeurl-1.0.2.tgz",
 			"integrity": "sha512-TPJXq8JqFaVYm2CWmPvnP2Iyo4ZSM7/QKcSmuMLDObfpH5fi7RUGmd/rTDf+rut/saiDiQEeVTNgAmJEdAOx0w=="
 		},
+		"engine.io": {
+			"version": "6.4.1",
+			"resolved": "https://registry.npmjs.org/engine.io/-/engine.io-6.4.1.tgz",
+			"integrity": "sha512-JFYQurD/nbsA5BSPmbaOSLa3tSVj8L6o4srSwXXY3NqE+gGUNmmPTbhn8tjzcCtSqhFgIeqef81ngny8JM25hw==",
+			"requires": {
+				"@types/cookie": "^0.4.1",
+				"@types/cors": "^2.8.12",
+				"@types/node": ">=10.0.0",
+				"accepts": "~1.3.4",
+				"base64id": "2.0.0",
+				"cookie": "~0.4.1",
+				"cors": "~2.8.5",
+				"debug": "~4.3.1",
+				"engine.io-parser": "~5.0.3",
+				"ws": "~8.11.0"
+			},
+			"dependencies": {
+				"cookie": {
+					"version": "0.4.2",
+					"resolved": "https://registry.npmjs.org/cookie/-/cookie-0.4.2.tgz",
+					"integrity": "sha512-aSWTXFzaKWkvHO1Ny/s+ePFpvKsPnjc551iI41v3ny/ow6tBG5Vd+FuqGNhh1LxOmVzOlGUriIlOaokOvhaStA=="
+				},
+				"ws": {
+					"version": "8.11.0",
+					"resolved": "https://registry.npmjs.org/ws/-/ws-8.11.0.tgz",
+					"integrity": "sha512-HPG3wQd9sNQoT9xHyNCXoDUa+Xw/VevmY9FoHyQ+g+rrMn4j6FB4np7Z0OhdTgjx6MgQLK7jwSy1YecU1+4Asg==",
+					"requires": {}
+				}
+			}
+		},
+		"engine.io-client": {
+			"version": "6.4.0",
+			"resolved": "https://registry.npmjs.org/engine.io-client/-/engine.io-client-6.4.0.tgz",
+			"integrity": "sha512-GyKPDyoEha+XZ7iEqam49vz6auPnNJ9ZBfy89f+rMMas8AuiMWOZ9PVzu8xb9ZC6rafUqiGHSCfu22ih66E+1g==",
+			"requires": {
+				"@socket.io/component-emitter": "~3.1.0",
+				"debug": "~4.3.1",
+				"engine.io-parser": "~5.0.3",
+				"ws": "~8.11.0",
+				"xmlhttprequest-ssl": "~2.0.0"
+			},
+			"dependencies": {
+				"ws": {
+					"version": "8.11.0",
+					"resolved": "https://registry.npmjs.org/ws/-/ws-8.11.0.tgz",
+					"integrity": "sha512-HPG3wQd9sNQoT9xHyNCXoDUa+Xw/VevmY9FoHyQ+g+rrMn4j6FB4np7Z0OhdTgjx6MgQLK7jwSy1YecU1+4Asg==",
+					"requires": {}
+				}
+			}
+		},
+		"engine.io-parser": {
+			"version": "5.0.6",
+			"resolved": "https://registry.npmjs.org/engine.io-parser/-/engine.io-parser-5.0.6.tgz",
+			"integrity": "sha512-tjuoZDMAdEhVnSFleYPCtdL2GXwVTGtNjoeJd9IhIG3C1xs9uwxqRNEu5WpnDZCaozwVlK/nuQhpodhXSIMaxw=="
+		},
 		"entities": {
 			"version": "2.2.0",
 			"resolved": "https://registry.npmjs.org/entities/-/entities-2.2.0.tgz",
@@ -8014,6 +8387,22 @@
 				}
 			}
 		},
+		"express-ws": {
+			"version": "5.0.2",
+			"resolved": "https://registry.npmjs.org/express-ws/-/express-ws-5.0.2.tgz",
+			"integrity": "sha512-0uvmuk61O9HXgLhGl3QhNSEtRsQevtmbL94/eILaliEADZBHZOQUAiHFrGPrgsjikohyrmSG5g+sCfASTt0lkQ==",
+			"requires": {
+				"ws": "^7.4.6"
+			},
+			"dependencies": {
+				"ws": {
+					"version": "7.5.9",
+					"resolved": "https://registry.npmjs.org/ws/-/ws-7.5.9.tgz",
+					"integrity": "sha512-F+P9Jil7UiSKSkppIiD94dN07AwvFixvLIj1Og1Rl9GGMuNipJnV9JzjD6XuqmAeiswGvUmNLjr5cFuXwNS77Q==",
+					"requires": {}
+				}
+			}
+		},
 		"fast-deep-equal": {
 			"version": "3.1.3",
 			"resolved": "https://registry.npmjs.org/fast-deep-equal/-/fast-deep-equal-3.1.3.tgz",
@@ -8102,6 +8491,21 @@
 			"resolved": "https://registry.npmjs.org/fastify-plugin/-/fastify-plugin-4.3.0.tgz",
 			"integrity": "sha512-M3+i368lV0OYTJ5TfClIoPKEKSOF7112iiPdwgfSR0gN98BjA1Nk+c6oBHtfcVt9KiMxl+EQKHC1QNWo3ZOpYQ=="
 		},
+		"fastify-socket.io": {
+			"version": "4.0.0",
+			"resolved": "https://registry.npmjs.org/fastify-socket.io/-/fastify-socket.io-4.0.0.tgz",
+			"integrity": "sha512-j5mgvHZpQ0Iiz9HyKwGdLOQGjFKH/6KOwx8esxCIBkIjtiQkdC8e4J1xX4JAMISLfTJOY9EHQG/1MmU/9cXaog==",
+			"requires": {
+				"fastify-plugin": "^3.0.0"
+			},
+			"dependencies": {
+				"fastify-plugin": {
+					"version": "3.0.1",
+					"resolved": "https://registry.npmjs.org/fastify-plugin/-/fastify-plugin-3.0.1.tgz",
+					"integrity": "sha512-qKcDXmuZadJqdTm6vlCqioEbyewF60b/0LOFCcYN1B6BIZGlYJumWWOYs70SFYLDAH4YqdE1cxH/RKMG7rFxgA=="
+				}
+			}
+		},
 		"fastq": {
 			"version": "1.13.0",
 			"resolved": "https://registry.npmjs.org/fastq/-/fastq-1.13.0.tgz",
@@ -9393,6 +9797,55 @@
 				}
 			}
 		},
+		"socket.io": {
+			"version": "4.6.1",
+			"resolved": "https://registry.npmjs.org/socket.io/-/socket.io-4.6.1.tgz",
+			"integrity": "sha512-KMcaAi4l/8+xEjkRICl6ak8ySoxsYG+gG6/XfRCPJPQ/haCRIJBTL4wIl8YCsmtaBovcAXGLOShyVWQ/FG8GZA==",
+			"requires": {
+				"accepts": "~1.3.4",
+				"base64id": "~2.0.0",
+				"debug": "~4.3.2",
+				"engine.io": "~6.4.1",
+				"socket.io-adapter": "~2.5.2",
+				"socket.io-parser": "~4.2.1"
+			}
+		},
+		"socket.io-adapter": {
+			"version": "2.5.2",
+			"resolved": "https://registry.npmjs.org/socket.io-adapter/-/socket.io-adapter-2.5.2.tgz",
+			"integrity": "sha512-87C3LO/NOMc+eMcpcxUBebGjkpMDkNBS9tf7KJqcDsmL936EChtVva71Dw2q4tQcuVC+hAUy4an2NO/sYXmwRA==",
+			"requires": {
+				"ws": "~8.11.0"
+			},
+			"dependencies": {
+				"ws": {
+					"version": "8.11.0",
+					"resolved": "https://registry.npmjs.org/ws/-/ws-8.11.0.tgz",
+					"integrity": "sha512-HPG3wQd9sNQoT9xHyNCXoDUa+Xw/VevmY9FoHyQ+g+rrMn4j6FB4np7Z0OhdTgjx6MgQLK7jwSy1YecU1+4Asg==",
+					"requires": {}
+				}
+			}
+		},
+		"socket.io-client": {
+			"version": "4.6.1",
+			"resolved": "https://registry.npmjs.org/socket.io-client/-/socket.io-client-4.6.1.tgz",
+			"integrity": "sha512-5UswCV6hpaRsNg5kkEHVcbBIXEYoVbMQaHJBXJCyEQ+CiFPV1NIOY0XOFWG4XR4GZcB8Kn6AsRs/9cy9TbqVMQ==",
+			"requires": {
+				"@socket.io/component-emitter": "~3.1.0",
+				"debug": "~4.3.2",
+				"engine.io-client": "~6.4.0",
+				"socket.io-parser": "~4.2.1"
+			}
+		},
+		"socket.io-parser": {
+			"version": "4.2.2",
+			"resolved": "https://registry.npmjs.org/socket.io-parser/-/socket.io-parser-4.2.2.tgz",
+			"integrity": "sha512-DJtziuKypFkMMHCm2uIshOYC7QaylbtzQwiMYDuCKy3OPkjLzu4B2vAhTlqipRHHzrI0NJeBAizTK7X+6m1jVw==",
+			"requires": {
+				"@socket.io/component-emitter": "~3.1.0",
+				"debug": "~4.3.1"
+			}
+		},
 		"sonic-boom": {
 			"version": "3.0.0",
 			"resolved": "https://registry.npmjs.org/sonic-boom/-/sonic-boom-3.0.0.tgz",
@@ -9703,6 +10156,17 @@
 			"resolved": "https://registry.npmjs.org/wrappy/-/wrappy-1.0.2.tgz",
 			"integrity": "sha1-tSQ9jz7BqjXxNkYFvA0QNuMKtp8="
 		},
+		"ws": {
+			"version": "8.12.1",
+			"resolved": "https://registry.npmjs.org/ws/-/ws-8.12.1.tgz",
+			"integrity": "sha512-1qo+M9Ba+xNhPB+YTWUlK6M17brTut5EXbcBaMRN5pH5dFrXz7lzz1ChFSUq3bOUl8yEvSenhHmYUNJxFzdJew==",
+			"requires": {}
+		},
+		"xmlhttprequest-ssl": {
+			"version": "2.0.0",
+			"resolved": "https://registry.npmjs.org/xmlhttprequest-ssl/-/xmlhttprequest-ssl-2.0.0.tgz",
+			"integrity": "sha512-QKxVRxiRACQcVuQEYFsI1hhkrMlrXHPegbbd1yn9UHOmRxY+si12nQYzri3vbzt8VdTTRviqcKxcyllFas5z2A=="
+		},
 		"xstate": {
 			"version": "4.32.1",
 			"resolved": "https://registry.npmjs.org/xstate/-/xstate-4.32.1.tgz",
diff --git a/package.json b/package.json
index 47adea14..119b02a3 100644
--- a/package.json
+++ b/package.json
@@ -15,6 +15,7 @@
 		"@fastify/middie": "^8.0.0",
 		"@fastify/swagger": "^8.0.0",
 		"@fastify/swagger-ui": "^1.1.0",
+		"@fastify/websocket": "^7.1.2",
 		"@svizzle/file": "^0.12.0",
 		"@svizzle/utils": "^0.16.0",
 		"bcrypt": "^5.0.1",
@@ -27,7 +28,9 @@
 		"dap_dv_backends_utils": "github:nestauk/dap_dv_backends_utils#v0.0.2",
 		"dotenv": "^16.0.3",
 		"express": "^4.18.1",
+		"express-ws": "^5.0.2",
 		"fastify": "^4.2.1",
+		"fastify-socket.io": "^4.0.0",
 		"lamb": "^0.60.0",
 		"neo4j-driver": "^5.0.1",
 		"node-fetch": "^3.2.10",
@@ -35,6 +38,8 @@
 		"posix": "^4.2.0",
 		"redis": "^4.2.0",
 		"rxjs": "^7.5.6",
+		"socket.io": "^4.6.1",
+		"socket.io-client": "^4.6.1",
 		"undici": "^4.13.0",
 		"uuid": "^8.3.2",
 		"winston": "^3.5.1",
diff --git a/src/services/protomaps/msoa_perf.html b/src/experiments/protomaps/http/index.html
similarity index 59%
rename from src/services/protomaps/msoa_perf.html
rename to src/experiments/protomaps/http/index.html
index e411b1d0..c352d76a 100644
--- a/src/services/protomaps/msoa_perf.html
+++ b/src/experiments/protomaps/http/index.html
@@ -7,6 +7,9 @@
     <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
     <script src="https://unpkg.com/maplibre-gl@2.4.0/dist/maplibre-gl.js"></script>
     <link href="https://unpkg.com/maplibre-gl@2.4.0/dist/maplibre-gl.css" rel="stylesheet" />
+    <script src="https://cdn.jsdelivr.net/npm/d3-color@3"></script>
+    <script src="https://cdn.jsdelivr.net/npm/d3-interpolate@3"></script>
+    <script src="https://cdn.jsdelivr.net/npm/d3-scale-chromatic@3"></script>
     <style>
         body {
             display: flex;
@@ -31,18 +34,14 @@
 
 <body>
     <div id="map"></div>
-    <button onclick="changeColours()">Change colours</button>
     <script>
-        const colours = {
-            "Shadwell": "#000fff"
-        }
         const style = {
             version: 8,
             layers: [
                 {
-                    id: "msoa",
+                    id: "lad",
                     source: "protomaps",
-                    "source-layer": "msoa",
+                    "source-layer": "lad",
                     type: "fill",
                     paint: {
                         "fill-color": [
@@ -52,7 +51,21 @@
                         ],
                         "fill-outline-color": "white"
                     },
-                }
+                    minzoom: 1,
+                    maxzoom: 10,
+                },
+                {
+                    id: "msoa",
+                    source: "protomaps",
+                    "source-layer": "msoa",
+                    type: "fill",
+                    paint: {
+                        "fill-color": "red",
+                        "fill-outline-color": "white"
+                    },
+                    minzoom: 10,
+                    maxzoom: 12
+                },
             ],
             sources: {
                 protomaps: {
@@ -63,9 +76,8 @@
                     ],
                     minzoom: 0,
                     maxzoom: 13,
-                    promoteId: 'MSOA21CD'
-                }
-
+                    promoteId: 'LAD22CD'
+                },
             }
         }
         var map = new maplibregl.Map({
@@ -73,17 +85,30 @@
             style,
             center: [-0.09, 51.505], // starting position [lng, lat]
             zoom: 8,
+            maxzoom: 13,
             projection: 'naturalEarth'
         });
 
-
-        const changeColours = () => {
-            map.queryRenderedFeatures().forEach(feature => {
+        const setColours = (features, scale) => {
+            features.forEach((feature, idx) => {
                 map.setFeatureState(feature, {
-                    fill: "#" + Math.floor(Math.random() * 16777215).toString(16)
+                    fill: d3.interpolateBlues(scale[idx])
                 });
-            })
+            });    
         }
+        map.on('move', () => {
+            const features = map.queryRenderedFeatures()
+            const ids = features.map(f => f.properties.OBJECTID)
+            const response = fetch('http://localhost:3000', {
+                method: 'POST',
+                body: JSON.stringify(ids),
+                headers: {
+                    'Content-Type': 'application/json'
+                }
+            })
+                .then(response => response.json())
+                .then(data => setColours(features, data));
+        });
     </script>
 
 </body>
diff --git a/src/experiments/protomaps/http/server.mjs b/src/experiments/protomaps/http/server.mjs
new file mode 100644
index 00000000..f208761b
--- /dev/null
+++ b/src/experiments/protomaps/http/server.mjs
@@ -0,0 +1,31 @@
+import cors from '@fastify/cors';
+import Fastify from 'fastify';
+import * as _ from 'lamb';
+
+const fastify = Fastify({
+	logger: false
+});
+
+await fastify.register(cors, { origin: true });
+
+fastify.post('/', (request, reply) => {
+	const ids = request.body;
+	const min = Math.min(...ids);
+	const max = Math.max(...ids);
+	const scale = _.map(
+		ids,
+		id => (id - min) / (max - min)
+	);
+	reply.send(scale);
+});
+
+const start = async () => {
+	try {
+		await fastify.listen({ host: '0.0.0.0', port: 3000 });
+	} catch (err) {
+		fastify.log.error(err);
+		throw new Error(err);
+	}
+};
+
+start();
diff --git a/src/services/protomaps/index.html b/src/experiments/protomaps/socketio/index.html
similarity index 74%
rename from src/services/protomaps/index.html
rename to src/experiments/protomaps/socketio/index.html
index 398d3519..d7d384c2 100644
--- a/src/services/protomaps/index.html
+++ b/src/experiments/protomaps/socketio/index.html
@@ -7,6 +7,10 @@
     <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
     <script src="https://unpkg.com/maplibre-gl@2.4.0/dist/maplibre-gl.js"></script>
     <link href="https://unpkg.com/maplibre-gl@2.4.0/dist/maplibre-gl.css" rel="stylesheet" />
+    <script src="https://cdn.socket.io/4.5.4/socket.io.min.js"></script>
+    <script src="https://cdn.jsdelivr.net/npm/d3-color@3"></script>
+    <script src="https://cdn.jsdelivr.net/npm/d3-interpolate@3"></script>
+    <script src="https://cdn.jsdelivr.net/npm/d3-scale-chromatic@3"></script>
     <style>
         body {
             display: flex;
@@ -31,11 +35,7 @@
 
 <body>
     <div id="map"></div>
-    <button onclick="changeColours()">Change colours</button>
     <script>
-        const colours = {
-            "Shadwell": "#000fff"
-        }
         const style = {
             version: 8,
             layers: [
@@ -66,7 +66,7 @@
                     },
                     minzoom: 10,
                     maxzoom: 12
-                }
+                },
             ],
             sources: {
                 protomaps: {
@@ -78,8 +78,7 @@
                     minzoom: 0,
                     maxzoom: 13,
                     promoteId: 'LAD22CD'
-                }
-
+                },
             }
         }
         var map = new maplibregl.Map({
@@ -87,19 +86,30 @@
             style,
             center: [-0.09, 51.505], // starting position [lng, lat]
             zoom: 8,
+            maxzoom: 13,
             projection: 'naturalEarth'
         });
 
-
-        const changeColours = () => {
-            map.queryRenderedFeatures().forEach(feature => {
+        const setColours = (features, scale) => {
+            features.forEach((feature, idx) => {
                 map.setFeatureState(feature, {
-                    fill: "#" + Math.floor(Math.random() * 16777215).toString(16)
+                    fill: d3.interpolateBlues(scale[idx])
                 });
-            })
+            });
         }
+
+        const socket = io("ws://localhost:3000");
+        let features;
+        map.on('move', () => {
+            features = map.queryRenderedFeatures()
+            const ids = features.map(f => f.properties.OBJECTID)
+            socket.emit("mapmove", ids);
+        });
+        socket.on("data", scale => {
+           setColours(features, scale); 
+        })
+
     </script>
 
 </body>
-
 </html>
\ No newline at end of file
diff --git a/src/experiments/protomaps/socketio/server.mjs b/src/experiments/protomaps/socketio/server.mjs
new file mode 100644
index 00000000..8d55d6ca
--- /dev/null
+++ b/src/experiments/protomaps/socketio/server.mjs
@@ -0,0 +1,47 @@
+import fastify from "fastify";
+import cors from '@fastify/cors';
+import fastifyIO from "fastify-socket.io";
+import * as _ from 'lamb';
+
+const server = fastify();
+
+await server.register(cors, {
+	origin: "*"
+});
+await server.register(fastifyIO, {
+	cors: {
+		origin: "*",
+		methods: ["GET", "POST"]
+	}
+});
+
+server.get("/", (req, reply) => {
+	console.log("connected");
+	server.io.on("mapmove", data => {
+		console.log("mapmovve");
+		console.log(data);
+	});
+});
+
+const start = async () => {
+	try {
+		await server.listen({ host: '0.0.0.0', port: 3000 });
+		server.io.on("connection", socket => {
+			socket.on("mapmove", ids => {
+				const min = Math.min(...ids);
+				const max = Math.max(...ids);
+				const scale = _.map(
+					ids,
+					id => (id - min) / (max - min)
+				);
+				server.io.emit("data", scale);
+			});
+		});
+
+	} catch (err) {
+		server.log.error(err);
+		throw new Error(err);
+	}
+};
+
+start();
diff --git a/src/experiments/protomaps/websockets/index.html b/src/experiments/protomaps/websockets/index.html
new file mode 100644
index 00000000..361ff023
--- /dev/null
+++ b/src/experiments/protomaps/websockets/index.html
@@ -0,0 +1,117 @@
+<!DOCTYPE html>
+<html>
+
+<head>
+    <meta charset="utf-8" />
+    <title>Display a map</title>
+    <meta name="viewport" content="initial-scale=1,maximum-scale=1,user-scalable=no" />
+    <script src="https://unpkg.com/maplibre-gl@2.4.0/dist/maplibre-gl.js"></script>
+    <link href="https://unpkg.com/maplibre-gl@2.4.0/dist/maplibre-gl.css" rel="stylesheet" />
+    <script src="https://cdn.jsdelivr.net/npm/d3-color@3"></script>
+    <script src="https://cdn.jsdelivr.net/npm/d3-interpolate@3"></script>
+    <script src="https://cdn.jsdelivr.net/npm/d3-scale-chromatic@3"></script>
+    <style>
+        body {
+            display: flex;
+            flex-direction: column;
+            align-items: center;
+            margin: 0;
+            padding: 0;
+        }
+
+        #map {
+            height: 90vh;
+            width: 90vw;
+        }
+
+        button {
+            width: 150px;
+            margin-top: 10px;
+        }
+    </style>
+</head>
+
+
+<body>
+    <div id="map"></div>
+    <script>
+        const style = {
+            version: 8,
+            layers: [
+                {
+                    id: "lad",
+                    source: "protomaps",
+                    "source-layer": "lad",
+                    type: "fill",
+                    paint: {
+                        "fill-color": [
+                            "case",
+                            ["!=", ["feature-state", "fill"], null], ["feature-state", "fill"],
+                            "steelblue"
+                        ],
+                        "fill-outline-color": "white"
+                    },
+                    minzoom: 1,
+                    maxzoom: 10,
+                },
+                {
+                    id: "msoa",
+                    source: "protomaps",
+                    "source-layer": "msoa",
+                    type: "fill",
+                    paint: {
+                        "fill-color": "red",
+                        "fill-outline-color": "white"
+                    },
+                    minzoom: 10,
+                    maxzoom: 12
+                },
+            ],
+            sources: {
+                protomaps: {
+                    type: "vector",
+                    tiles: [
+                        // our tiles
+                        "https://d21cr7yltjd5j0.cloudfront.net/lad.msoa/{z}/{x}/{y}.mvt",
+                    ],
+                    minzoom: 0,
+                    maxzoom: 13,
+                    promoteId: 'LAD22CD'
+                },
+            }
+        }
+        var map = new maplibregl.Map({
+            container: 'map', // container id
+            style,
+            center: [-0.09, 51.505], // starting position [lng, lat]
+            zoom: 8,
+            maxzoom: 13,
+            projection: 'naturalEarth'
+        });
+
+        const setColours = (features, scale) => {
+            features.forEach((feature, idx) => {
+                map.setFeatureState(feature, {
+                    fill: d3.interpolateBlues(scale[idx])
+                });
+            });    
+        }
+
+        const socket = new WebSocket('ws://localhost:3000');
+        socket.onopen = event => {
+            let features;
+            map.on('move', () => {
+                features = map.queryRenderedFeatures()
+                const ids = features.map(f => f.properties.OBJECTID)
+                socket.send(JSON.stringify(ids)); 
+            });
+            socket.onmessage = event => {
+                const scale = JSON.parse(event.data);
+                setColours(features, scale);
+            }
+        }
+    </script>
+
+</body>
+
+</html>
\ No newline at end of file
diff --git a/src/experiments/protomaps/websockets/server.mjs b/src/experiments/protomaps/websockets/server.mjs
new file mode 100644
index 00000000..3aecfe2b
--- /dev/null
+++ b/src/experiments/protomaps/websockets/server.mjs
@@ -0,0 +1,33 @@
+import express from 'express';
+import expressws from 'express-ws';
+import * as _ from 'lamb';
+
+const app = express();
+const expressWs = expressws(app);
+
+app.use(function (req, res, next) {
+	console.log('middleware');
+	req.testing = 'testing';
+	return next();
+});
+
+app.get('/', function(req, res, next) {
+	console.log('get route', req.testing);
+	res.end();
+});
+
+app.ws('/', function(ws, req) {
+	ws.on('message', function(msg) {
+		const ids = JSON.parse(msg);
+		const min = Math.min(...ids);
+		const max = Math.max(...ids);
+		const scale = _.map(
+			ids,
+			id => (id - min) / (max - min)
+		);
+		ws.send(JSON.stringify(scale));
+	});
+	console.log('socket', req.testing);
+});
+
+app.listen(3000);