| Planned | Expected | |
|---|---|---|
| Bedford | 10:18 | On time |
| Flitwick | 10:29 | 10:34 |
| Harlington | 10:33 | 10:38 |
| Leagrave | 10:38 | 10:43 |
| Luton | 10:43 | 10:46 |
| Luton Airport Parkway | 10:46 | 10:49 |
| Harpenden | 10:52 | 10:55 |
| St Albans | 10:57 | 11:01 |
| West Hampstead Thameslink | 11:09 | 11:13 |
| London St Pancras (Intl) | 11:20 | On time |
| Farringdon | 11:24 | On time |
| City Thameslink | 11:26 | 11:28 |
| London Blackfriars | 11:29 | On time |
| London Bridge | 11:35 | On time |
| East Croydon | 11:49 | On time |
| Gatwick Airport | 12:05 | On time |
| Three Bridges | 12:10 | On time |
| Balcombe | 12:16 | On time |
| Haywards Heath | 12:22 | On time |
| Wivelsfield | 12:26 | On time |
| Burgess Hill | 12:28 | On time |
| Hassocks | 12:32 | On time |
| Preston Park | 12:38 | On time |
| Brighton | 12:43 | On time |