Last update 4 August 2024
Please select a starting letter from the links below:
| ELR | Line name | Mileages | Datum | Notes |
|---|---|---|---|---|
| UCJ | Upperby Bridge Junction to Carlisle Caldew Junction | 0.00 - 2.14 | Upperby Bridge Junction | |
| UCX | Upper Caldercruix Branch | 0.00 - 0.21 | Caldercruix Station | To Glengowan Paint Works |
| UDS | Up Decoy Sidings | 15.55 - 16.56 | Brancliffe East Junction | |
| UHL | Up High Level Arrival Line | 1.06 - 2.76 | Kensal Green Junction | |
| ULC | Ullcoats Branch | 0.00 - 1.17 | Ullcoats Branch Junction | |
| ULR | Carlisle Upperby Junction to London Road Junction | 0.00 - 0.35 | Upperby Junction | |
| UNS | Unstone Branch | 149.62 - 151.68 | St Pancras via Leicester, Toton and Barrow Hill | |
| UPG | Upminster and Grays Branch | 0.00 - 6.56 | Upminster East Junction | |
| UPL | Uphall Branch | ?? - ?? | Part of CJN?? | |
| USS | Up Side Sidings, Euston | 0.35 - 0.57 | Euston | |
| USY | Up Sidings, Westbury | 109.60 - 109.72 | Paddington via Melksham | |
| UXB | Uxbridge Branch | 13.28 - 15.68 | Paddington | 13.28 - 13.39 now STA |
| UXC | Uttoxeter Curve | 0.00 - 0.28 | Uttoxeter West Junction |