| Link | Number | Details | Miles |
|
|
37131
| Observed at Southall | |
|
|
37139
| Observed at Cardiff Central | |
|
|
37203
| Observed at Rover Way, Cardiff | |
|
|
37207
| Observed at Severn Tunnel Junction | |
|
|
37215
| Observed at Willesden | |
|
|
37253
| Observed at Cardiff Central | |
|
|
37255
| Observed at Cardiff Central | |
|
|
37256
| Observed at Cardiff Central | |
|
|
37269
| Observed at Cardiff Central | |
|
|
37292
| Observed at Severn Tunnel Junction | |