diff --git a/src/fsrapiclient/api.py b/src/fsrapiclient/api.py
index 36051f5..216c2a4 100644
--- a/src/fsrapiclient/api.py
+++ b/src/fsrapiclient/api.py
@@ -331,7 +331,7 @@ def common_search(self, search_str: str) -> FsrApiResponse:
         >>> client.common_search(urlencode({'q': 'Hastings Direct', 'type': 'firm'}))
         <Response [200]>
         """
-        url = f'{FSR_API_CONSTANTS.BASEURL.value}/{self.api_version}/Search?{search_str}'
+        url = f'{FSR_API_CONSTANTS.BASEURL.value}/Search?{search_str}'
 
         try:
             return FsrApiResponse(self.api_session.get(url))
@@ -564,8 +564,6 @@ def _get_resource_info(self, resource_ref_number: str, resource_type: str, modif
         url = (
             f'{FSR_API_CONSTANTS.BASEURL.value}'
             '/'
-            f'{self.api_version}'
-            '/'
             f'{resource_endpoint_base}'
             '/'
             f'{resource_ref_number}'
@@ -1587,8 +1585,6 @@ def get_regulated_markets(self) -> FsrApiResponse:
         url = (
             f'{FSR_API_CONSTANTS.BASEURL.value}'
             '/'
-            f'{self.api_version}'
-            '/'
             'CommonSearch'
             '?'
             f'{urlencode({"q": "RM"})}'
diff --git a/src/fsrapiclient/constants.py b/src/fsrapiclient/constants.py
index d5ca84f..8760e7f 100644
--- a/src/fsrapiclient/constants.py
+++ b/src/fsrapiclient/constants.py
@@ -16,16 +16,16 @@ class FSR_API_CONSTANTS(Enum):
 
     Examples
     --------
-    >>> FSR_API_CONSTANTS.BASEURL.value
-    'https://register.fca.org.uk/services'
     >>> FSR_API_CONSTANTS.API_VERSION.value
     'V0.1'
+    >>> FSR_API_CONSTANTS.BASEURL.value
+    'https://register.fca.org.uk/services/V0.1'
     >>> FSR_API_CONSTANTS.RESOURCE_TYPES.value
     {'firm': {'type_name': 'firm', 'endpoint_base': 'Firm'}, 'fund': {'type_name': 'fund', 'endpoint_base': 'CIS'}, 'individual': {'type_name': 'individual', 'endpoint_base': 'Individuals'}}
     """
 
-    BASEURL = 'https://register.fca.org.uk/services'
     API_VERSION = 'V0.1'
+    BASEURL = f'https://register.fca.org.uk/services/{API_VERSION}'
     RESOURCE_TYPES = {
         'firm': {'type_name': 'firm', 'endpoint_base': 'Firm'},
         'fund': {'type_name': 'fund', 'endpoint_base': 'CIS'},
diff --git a/tests/units/test_constants.py b/tests/units/test_constants.py
index 728e12c..15f3b2f 100644
--- a/tests/units/test_constants.py
+++ b/tests/units/test_constants.py
@@ -11,8 +11,8 @@
 class TestFsrApiConstants:
 
 	def test_fsr_api_constants(self):
-		assert FSR_API_CONSTANTS.BASEURL.value == 'https://register.fca.org.uk/services'
 		assert FSR_API_CONSTANTS.API_VERSION.value == 'V0.1'
+		assert FSR_API_CONSTANTS.BASEURL.value == 'https://register.fca.org.uk/services/V0.1'
 		assert FSR_API_CONSTANTS.RESOURCE_TYPES.value == {
 			'firm': {'type_name': 'firm', 'endpoint_base': 'Firm'},
 			'fund': {'type_name': 'fund', 'endpoint_base': 'CIS'},