This service has been delayed by a fault with the signalling system
Operator: Thameslink
Previous Calling Points:
| 18:48 | Bedford | Delayed | actual 19:01 |
| 18:59 | Flitwick | Delayed | actual 19:13 |
| 19:03 | Harlington | Delayed | actual 19:17 |
| 19:08 | Leagrave | Delayed | actual 19:23 |
| 19:13 | Luton | Delayed | actual 19:28 |
| 19:16 | Luton Airport Parkway | Delayed | actual 19:31 |
| 19:22 | Harpenden | Delayed | actual 19:37 |
| 19:27 | St Albans | Delayed | actual 19:43 |
| 19:30 | Radlett | Unknown | |
| 19:32 | Elstree & Borehamwood | Unknown | |
| 19:35 | Mill Hill Broadway | Unknown |
