| Link | Number | Details | Miles |
|
|
37101
| Observed at Severn Tunnel Junction | |
|
|
37162
| Observed at Bristol Bath Road | |
|
|
37182
| Observed at Ebbw Junction | |
|
|
37210
| Observed at Severn Tunnel Junction | |
|
|
37225
| Observed at Cardiff Central | |
|
|
37233
| Observed at Severn Tunnel Junction | |
|
|
37234
| Observed at Severn Tunnel Junction | |
|
|
37236
| Observed at Ebbw Junction | |
|
|
37254
| Observed at Severn Tunnel Junction | |
|
|
37255
| Observed at Severn Tunnel Junction | |
|
|
37269
| Observed at Severn Tunnel Junction | |
|
|
37273
| Observed at Severn Tunnel Junction | |
|
|
37282
| Observed at Severn Tunnel Junction | |
|
|
37289
| Observed at Severn Tunnel Junction | |
|
|
37291
| Observed at Cardiff Central | |
|
|
37292
| Observed at Severn Tunnel Junction | |
|
|
37296
| Observed at Severn Tunnel Junction | |