diff --git a/application/CohortManager/src/Functions/DemographicServices/DemographicDataManagementFunction/DemographicDataFunction.cs b/application/CohortManager/src/Functions/DemographicServices/DemographicDataManagementFunction/DemographicDataFunction.cs
index d1ce11b6f..3b59a9c56 100644
--- a/application/CohortManager/src/Functions/DemographicServices/DemographicDataManagementFunction/DemographicDataFunction.cs
+++ b/application/CohortManager/src/Functions/DemographicServices/DemographicDataManagementFunction/DemographicDataFunction.cs
@@ -24,6 +24,24 @@ public DemographicDataFunction(ILogger<DemographicDataFunction> logger, ICreateR
 
     [Function("DemographicDataFunction")]
     public async Task<HttpResponseData> Run([HttpTrigger(AuthorizationLevel.Anonymous, "get", "post")] HttpRequestData req)
+    {
+        return await Main(req, false);
+    }
+
+
+    /// <summary>
+    /// Gets filtered demographic data from the demographic data service,
+    /// this endpoint is used by the external BI product
+    /// </summary>
+    /// <param name="Id">The NHS number to get the demographic data for.</param>
+    /// <returns>JSON response containing the Primary Care Provider & Preferred Language</returns>
+    [Function("DemographicDataFunctionExternal")]
+    public async Task<HttpResponseData> RunExternal([HttpTrigger(AuthorizationLevel.Anonymous, "get")] HttpRequestData req)
+    {
+        return await Main(req, true);
+    }
+
+    private async Task<HttpResponseData> Main(HttpRequestData req, bool externalRequest)
     {
         var participantData = new Participant();
         try
@@ -56,6 +74,14 @@ public async Task<HttpResponseData> Run([HttpTrigger(AuthorizationLevel.Anonymou
                     _logger.LogInformation("demographic function failed");
                     return _createResponse.CreateHttpResponse(HttpStatusCode.NotFound, req);
                 }
+
+                // Filters out unnsecessry data for use in the BI prdoduct
+                if (externalRequest)
+                {
+                    var filterdData = JsonSerializer.Deserialize<FilteredDemographicData>(data);
+                    data = JsonSerializer.Serialize(filterdData);
+                }
+
                 return _createResponse.CreateHttpResponse(HttpStatusCode.OK, req, data);
             }
         }
diff --git a/application/CohortManager/src/Functions/DemographicServices/DemographicDataManagementFunction/FilteredDemographicData.cs b/application/CohortManager/src/Functions/DemographicServices/DemographicDataManagementFunction/FilteredDemographicData.cs
new file mode 100644
index 000000000..03b516f9b
--- /dev/null
+++ b/application/CohortManager/src/Functions/DemographicServices/DemographicDataManagementFunction/FilteredDemographicData.cs
@@ -0,0 +1,9 @@
+/// <summary>Demographic fields required in requests from the BI product.</summary>
+
+namespace NHS.CohortManager.DemographicServices;
+
+public class FilteredDemographicData
+{
+    public string? PrimaryCareProvider { get; set; }
+    public string? PreferredLanguage { get; set; }
+}
diff --git a/tests/UnitTests/DemographicServicesTests/DemographicDataFunctionTests/DemographicDataFunctionTests.cs b/tests/UnitTests/DemographicServicesTests/DemographicDataFunctionTests/DemographicDataFunctionTests.cs
index 577e88c18..92c425a42 100644
--- a/tests/UnitTests/DemographicServicesTests/DemographicDataFunctionTests/DemographicDataFunctionTests.cs
+++ b/tests/UnitTests/DemographicServicesTests/DemographicDataFunctionTests/DemographicDataFunctionTests.cs
@@ -17,7 +17,7 @@ public class DemographicDataFunctionTests
 {
     private readonly Mock<ILogger<DemographicDataFunction>> _logger = new();
     private readonly Mock<ICreateResponse> _createResponse = new();
-    private readonly Mock<ICallFunction> _callFunction = new();
+    private readonly Mock<ICallFunction> _callFunctionMock = new();
     private readonly Mock<FunctionContext> _context = new();
     private Mock<HttpRequestData> _request;
     private readonly Mock<HttpWebResponse> _webResponse = new();
@@ -59,20 +59,20 @@ public DemographicDataFunctionTests()
 
 
         _webResponse.Setup(x => x.StatusCode).Returns(HttpStatusCode.OK);
-        _callFunction.Setup(call => call.SendPost(It.IsAny<string>(), It.IsAny<string>()))
+        _callFunctionMock.Setup(call => call.SendPost(It.IsAny<string>(), It.IsAny<string>()))
                             .Returns(Task.FromResult<HttpWebResponse>(_webResponse.Object));
 
         _webResponse.Setup(x => x.StatusCode).Returns(HttpStatusCode.OK);
-        _callFunction.Setup(call => call.SendGet(It.IsAny<string>()))
+        _callFunctionMock.Setup(call => call.SendGet(It.IsAny<string>()))
                         .Returns(Task.FromResult<string>(""));
     }
 
     [TestMethod]
-    public async Task Run_return_DemographicDataSavedPostRequest_OK()
+    public async Task RunPost_ValidRequest_ReturnOk()
     {
         // Arrange
         var json = JsonSerializer.Serialize(_participant);
-        var sut = new DemographicDataFunction(_logger.Object, _createResponse.Object, _callFunction.Object);
+        var sut = new DemographicDataFunction(_logger.Object, _createResponse.Object, _callFunctionMock.Object);
 
         _request = _setupRequest.Setup(json);
 
@@ -85,15 +85,15 @@ public async Task Run_return_DemographicDataSavedPostRequest_OK()
     }
 
     [TestMethod]
-    public async Task Run_return_DemographicDataSavedPostRequest_InternalServerEver()
+    public async Task RunPost_DataServiceReturns500_ReturnInternalServerError()
     {
         // Arrange
         var json = JsonSerializer.Serialize(_participant);
-        var sut = new DemographicDataFunction(_logger.Object, _createResponse.Object, _callFunction.Object);
+        var sut = new DemographicDataFunction(_logger.Object, _createResponse.Object, _callFunctionMock.Object);
 
         _request = _setupRequest.Setup(json);
         _webResponse.Setup(x => x.StatusCode).Returns(HttpStatusCode.InternalServerError);
-        _callFunction.Setup(call => call.SendPost(It.IsAny<string>(), It.IsAny<string>()))
+        _callFunctionMock.Setup(call => call.SendPost(It.IsAny<string>(), It.IsAny<string>()))
                             .Returns(Task.FromResult<HttpWebResponse>(_webResponse.Object));
 
         // Act
@@ -105,18 +105,18 @@ public async Task Run_return_DemographicDataSavedPostRequest_InternalServerEver(
     }
 
     [TestMethod]
-    public async Task Run_return_DemographicDataGetRequest_OK()
+    public async Task RunGet_ValidRequest_ReturnOk()
     {
         // Arrange
         var json = JsonSerializer.Serialize(_participant);
-        var sut = new DemographicDataFunction(_logger.Object, _createResponse.Object, _callFunction.Object);
+        var sut = new DemographicDataFunction(_logger.Object, _createResponse.Object, _callFunctionMock.Object);
 
         _request = _setupRequest.Setup(json);
 
         // Act
         _request.Setup(x => x.Query).Returns(new System.Collections.Specialized.NameValueCollection() { { "Id", "1" } });
 
-        _callFunction.Setup(call => call.SendGet(It.IsAny<string>()))
+        _callFunctionMock.Setup(call => call.SendGet(It.IsAny<string>()))
                             .Returns(Task.FromResult<string>("data"));
 
 
@@ -132,7 +132,7 @@ public async Task Run_return_DemographicDataNotSaved_InternalServerError()
     {
         // Arrange
         var json = JsonSerializer.Serialize(_participant);
-        var sut = new DemographicDataFunction(_logger.Object, _createResponse.Object, _callFunction.Object);
+        var sut = new DemographicDataFunction(_logger.Object, _createResponse.Object, _callFunctionMock.Object);
 
         _request = _setupRequest.Setup(json);
 
@@ -146,7 +146,7 @@ public async Task Run_return_DemographicDataNotSaved_InternalServerError()
 
 
         _webResponse.Setup(x => x.StatusCode).Returns(HttpStatusCode.InternalServerError);
-        _callFunction.Setup(call => call.SendPost(It.Is<string>(s => s.Contains("DemographicDataFunctionURI")), It.IsAny<string>()))
+        _callFunctionMock.Setup(call => call.SendPost(It.Is<string>(s => s.Contains("DemographicDataFunctionURI")), It.IsAny<string>()))
                             .Returns(Task.FromResult<HttpWebResponse>(_webResponse.Object));
 
         // Act
@@ -157,11 +157,11 @@ public async Task Run_return_DemographicDataNotSaved_InternalServerError()
     }
 
     [TestMethod]
-    public async Task Run_Return_DemographicFunctionThrows_InternalServerError()
+    public async Task RunPost_CallFunctionThrowsError_ReturnInternalServerError()
     {
         // Arrange
         var json = JsonSerializer.Serialize(_participant);
-        var sut = new DemographicDataFunction(_logger.Object, _createResponse.Object, _callFunction.Object);
+        var sut = new DemographicDataFunction(_logger.Object, _createResponse.Object, _callFunctionMock.Object);
 
         _request = _setupRequest.Setup(json);
 
@@ -175,7 +175,7 @@ public async Task Run_Return_DemographicFunctionThrows_InternalServerError()
 
 
         _webResponse.Setup(x => x.StatusCode).Returns(HttpStatusCode.InternalServerError);
-        _callFunction.Setup(call => call.SendPost(It.Is<string>(s => s.Contains("DemographicDataFunctionURI")), It.IsAny<string>()))
+        _callFunctionMock.Setup(call => call.SendPost(It.Is<string>(s => s.Contains("DemographicDataFunctionURI")), It.IsAny<string>()))
                             .ThrowsAsync(new Exception("there was an error"));
 
         // Act
@@ -193,4 +193,33 @@ public async Task Run_Return_DemographicFunctionThrows_InternalServerError()
             It.IsAny<Func<It.IsAnyType, Exception?, string>>()
         ), Times.AtLeastOnce(), "There has been an error saving demographic data:");
     }
+
+    [TestMethod]
+    public async Task RunExternal_ValidRequest_ReturnOk()
+    {
+        // Arrange
+        var json = JsonSerializer.Serialize(_participant);
+
+        _request = _setupRequest.Setup(json);
+
+        Demographic DataServiceResponse = new()
+        {
+            PrimaryCareProvider = "Blerg",
+            PreferredLanguage = "Francais"
+        };
+
+        _request.Setup(x => x.Query).Returns(new System.Collections.Specialized.NameValueCollection() { { "Id", "1" } });
+
+        _callFunctionMock.Setup(call => call.SendGet(It.IsAny<string>()))
+                        .ReturnsAsync(JsonSerializer.Serialize(DataServiceResponse));
+
+        _request.Setup(r => r.Method).Returns("GET");
+        var sut = new DemographicDataFunction(_logger.Object, _createResponse.Object, _callFunctionMock.Object);
+
+        // Act
+        var result = await sut.RunExternal(_request.Object);
+
+        // Assert
+        Assert.AreEqual(HttpStatusCode.OK, result.StatusCode);
+    }
 }