diff --git a/Huxley2/Connected Services/OpenLDBWS/BaseServiceItem.cs b/Huxley2/Connected Services/OpenLDBWS/BaseServiceItem.cs
index 6e299df..aedaef5 100644
--- a/Huxley2/Connected Services/OpenLDBWS/BaseServiceItem.cs	
+++ b/Huxley2/Connected Services/OpenLDBWS/BaseServiceItem.cs	
@@ -3,6 +3,7 @@
 using Microsoft.AspNetCore.WebUtilities;
 using System;
 using System.Diagnostics.CodeAnalysis;
+using System.Globalization;
 
 namespace OpenLDBWS
 {
@@ -45,7 +46,7 @@ public static Guid ToGuid(string serviceID)
         public static string FromGuid(Guid serviceGuid)
         {
             // reverse of ToGuid above
-            string guidString = serviceGuid.ToString("N");
+            string guidString = serviceGuid.ToString("N", CultureInfo.InvariantCulture);
             string num = guidString.Substring(0, 7); // get digits
             string hexString = guidString.Substring(16, 16); // get letters
             byte[] bytes = Convert.FromHexString(hexString);
diff --git a/Huxley2/Huxley2.csproj b/Huxley2/Huxley2.csproj
index 30d5292..570056d 100644
--- a/Huxley2/Huxley2.csproj
+++ b/Huxley2/Huxley2.csproj
@@ -7,7 +7,7 @@
         <Nullable>enable</Nullable>
         <IncludeOpenAPIAnalyzers>true</IncludeOpenAPIAnalyzers>
         <AssemblyName>Huxley2</AssemblyName>
-        <Version>2.0.3</Version>
+        <Version>2.0.4</Version>
         <Copyright>© James Singleton</Copyright>
     </PropertyGroup>
 
diff --git a/Huxley2/Pages/Index.cshtml b/Huxley2/Pages/Index.cshtml
index dae0d27..89a7187 100644
--- a/Huxley2/Pages/Index.cshtml
+++ b/Huxley2/Pages/Index.cshtml
@@ -567,9 +567,8 @@
                     various different encoders.
                 </p>
                 <p>
-                    This endpoint also accepts the <a href="/service/8c105350-4235-44f3-b076-87fe829c577e">GUID
+                    This endpoint also accepts the <a href="/service/46715300-0000-0000-4248-414d4e57535f">GUID
                         representation of the ID</a>
-                    as <code>/</code>, <code>+</code> and case sensitivity can cause trouble if you're not careful.
                 </p>
                 <p>
                     If the ID is a RID (a 15 digit long integer) then the staff API will be used. In this case a staff
diff --git a/Huxley2/Services/ServiceDetailsService.cs b/Huxley2/Services/ServiceDetailsService.cs
index bc45c51..462d454 100644
--- a/Huxley2/Services/ServiceDetailsService.cs
+++ b/Huxley2/Services/ServiceDetailsService.cs
@@ -33,28 +33,11 @@ LDBSVServiceSoap staffSoapClient
 
         public async Task<object> GetServiceDetailsAsync(ServiceRequest request)
         {
-            // The (non-staff) Darwin API requires service ID to be a standard base 64 string
-            // As it's simply a GUID in base 64 there'll always be maximum padding (== suffix)
-            // %2F will still be escaped if from the route and not from the query but nothing else will
-            // https://docs.microsoft.com/en-us/aspnet/core/web-api/#binding-source-parameter-inference
-            request.ServiceId = request.ServiceId.Replace("%2F", "/", StringComparison.OrdinalIgnoreCase);
-
-            if (request.ServiceId.Length == 24)
-            {
-                if (Convert.TryFromBase64String(request.ServiceId, new byte[16], out var length) && length == 16)
-                {
-                    _logger.LogInformation($"Calling service details SOAP endpoint for {request.ServiceId}");
-                    var s = await _soapClient.GetServiceDetailsAsync(new GetServiceDetailsRequest
-                    {
-                        AccessToken = _accessTokenService.MakeAccessToken(request),
-                        serviceID = request.ServiceId,
-                    });
-                    return s.GetServiceDetailsResult;
-                }
-            }
-
-            // If ID looks like a RID (15 decimal digit long base 10 integer) then use the staff API if configured
+            // Staff API
+            // Formatted as a 15 digit base-10 long
             // This appears to be the date and the UID (with the first character in decimal representation)
+
+            // use the staff API if configured
             if (request.ServiceId.Length == 15 && long.TryParse(request.ServiceId, out _)
                 && _accessTokenService.TryMakeStaffAccessToken(out var staffToken))
             {
@@ -68,6 +51,11 @@ public async Task<object> GetServiceDetailsAsync(ServiceRequest request)
                 return staffService.GetServiceDetailsResult;
             }
 
+
+            // Public API
+            // 7 digit base-10 number and an up-to-8 character TIPLOC,
+            // padded with underscore characters
+
             // We also accept the standard hexadecimal (base 16) GUID representation
             if (Guid.TryParse(request.ServiceId, out Guid sid))
             {
@@ -75,53 +63,32 @@ public async Task<object> GetServiceDetailsAsync(ServiceRequest request)
                 request.ServiceId = OpenLDBWS.BaseServiceItem.FromGuid(sid);
             }
 
-            // handle new-format version
-            // structure: 0000000XXXXXXX, where 0 is any numeric char and X is
-            //            any alpha char or an underscore
-            if (request.ServiceId.Length == 15)
-            {
-                _logger.LogInformation($"Calling service details SOAP endpoint for {request.ServiceId}");
-                var s = await _soapClient.GetServiceDetailsAsync(new GetServiceDetailsRequest
-                {
-                    AccessToken = _accessTokenService.MakeAccessToken(request),
-                    serviceID = request.ServiceId,
-                });
-                return s.GetServiceDetailsResult;
-            }
-
             // Support URL safe base 64 encoding as it's more suitable for this situation
             // https://en.wikipedia.org/wiki/Base64#The_URL_applications
             // https://tools.ietf.org/html/rfc4648#section-5
             // Encoder available as part of ASP.NET Core: Microsoft.Extensions.WebEncoders
             // For more info read ASP.NET Core 2 High Performance (https://unop.uk/book) :)
-
-            if (request.ServiceId.Length == 22)
+            if (request.ServiceId.Length == 20)
             {
                 var sidBytes = WebEncoders.Base64UrlDecode(request.ServiceId);
-                if (sidBytes.Length == 16)
+                if (sidBytes.Length == 15)
                 {
-                    request.ServiceId = Convert.ToBase64String(sidBytes);
+                    request.ServiceId = System.Text.Encoding.UTF8.GetString(sidBytes);
                 }
             }
 
-            // If ID wasn't percent-encoded then it may be missing / + =
-            // We try to fix it up if it isn't the correct length
-            while (!request.ServiceId.EndsWith("==", StringComparison.OrdinalIgnoreCase))
-            {
-                request.ServiceId += "=";
-            }
-            while (request.ServiceId.Length < 24)
+            if (request.ServiceId.Length == 15)
             {
-                request.ServiceId = "/" + request.ServiceId;
+                _logger.LogInformation($"Calling service details SOAP endpoint for {request.ServiceId}");
+                var service = await _soapClient.GetServiceDetailsAsync(new GetServiceDetailsRequest
+                {
+                    AccessToken = _accessTokenService.MakeAccessToken(request),
+                    serviceID = request.ServiceId,
+                });
+                return service.GetServiceDetailsResult;
             }
 
-            _logger.LogInformation($"Calling service details SOAP endpoint for {request.ServiceId}");
-            var service = await _soapClient.GetServiceDetailsAsync(new GetServiceDetailsRequest
-            {
-                AccessToken = _accessTokenService.MakeAccessToken(request),
-                serviceID = request.ServiceId,
-            });
-            return service.GetServiceDetailsResult;
+            throw new Exception("Invalid Service ID provided");
         }
 
         public string GenerateChecksum(object service) => ChecksumGenerator.GenerateChecksum(service);
diff --git a/Huxley2Tests/Services/ServiceDetailsServiceTests.cs b/Huxley2Tests/Services/ServiceDetailsServiceTests.cs
index 1ba016f..8792e71 100644
--- a/Huxley2Tests/Services/ServiceDetailsServiceTests.cs
+++ b/Huxley2Tests/Services/ServiceDetailsServiceTests.cs
@@ -20,9 +20,29 @@ public class ServiceDetailsServiceTests
         private OpenLDBSVWS.LDBSVServiceSoap staffClient;
         private ServiceDetailsService service;
 
+        private string GenerateServiceId()
+        {
+            // generate a mock new-format serviceid
+            const string digitChars = "0123456789";
+            const string locChars = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
+            var random = new System.Random();
+            var sid_array = new char[15];
+            for (int i = 0; i < 7; i++)
+            {
+                sid_array[i] = digitChars[random.Next(digitChars.Length)];
+            }
+            for (int i = 8; i < 14; i++)
+            {
+                sid_array[i] = locChars[random.Next(locChars.Length)];
+            }
+            sid_array[14] = '_';
+
+            return new String(sid_array);
+        }
+
         public ServiceDetailsServiceTests()
         {
-            var sid = Convert.ToBase64String(Guid.NewGuid().ToByteArray());
+            var sid = GenerateServiceId();
             var cat = Guid.NewGuid().ToString();
             dat = Guid.NewGuid().ToString();
             restRequest = new ServiceRequest
diff --git a/station_codes.csv b/station_codes.csv
index a63f82d..9af4611 100644
--- a/station_codes.csv
+++ b/station_codes.csv
@@ -1,6 +1,5 @@
 "stationName","crsCode"
 "Abbey Wood","ABW"
-"Abbey Wood (Elizabeth line)","ABX"
 "Aber","ABE"
 "Abercynon","ACY"
 "Aberdare","ABA"
@@ -868,6 +867,7 @@
 "East Garforth","EGF"
 "East Grinstead","EGR"
 "East Kilbride","EKL"
+"East Linton","ELT"
 "East Malling","EML"
 "East Midlands Airport (Bus)","EMA"
 "East Midlands Parkway","EMD"
@@ -965,7 +965,6 @@
 "Farningham Road","FNR"
 "Farnworth","FNW"
 "Farringdon","ZFD"
-"Farringdon (Elizabeth line)","FDX"
 "Fauldhouse","FLD"
 "Faversham","FAV"
 "Faygate","FGT"
@@ -1378,6 +1377,7 @@
 "Inverkeithing","INK"
 "Inverkip","INP"
 "Inverness","INV"
+"Inverness Airport","IVA"
 "Invershin","INH"
 "Inverurie","INR"
 "Ipswich","IPS"
@@ -1571,7 +1571,6 @@
 "Liverpool Landing Stage","LVS"
 "Liverpool Lime Street","LIV"
 "Liverpool South Parkway","LPY"
-"Liverpool St. (Elizabeth line)","LSX"
 "Livingston North","LSN"
 "Livingston South","LVG"
 "Llanaber","LLA"
@@ -1947,7 +1946,6 @@
 "Oxford Parkway","OXP"
 "Oxshott","OXS"
 "Oxted","OXT"
-"Paddington (Elizabeth line)","PDX"
 "Paddock Wood","PDW"
 "Padgate","PDG"
 "Padstow Bus Terminus","PDT"
@@ -2785,7 +2783,6 @@
 "White Hart Lane","WHL"
 "White Notley","WNY"
 "Whitechapel","ZLW"
-"Whitechapel (Elizabeth line)","WHX"
 "Whitecraigs","WCR"
 "Whitehaven","WTH"
 "Whitehill Prince of Wales (Bus","WHH"