| Planned | Expected | |
|---|---|---|
| Brighton | 00:02 | On time |
| Preston Park | 00:06 | On time |
| Hassocks | 00:12 | On time |
| Burgess Hill | 00:16 | On time |
| Wivelsfield | 00:18 | On time |
| Haywards Heath | 00:23 | On time |
| Balcombe | 00:28 | On time |
| Three Bridges | 00:36 | On time |
| Gatwick Airport | 00:42 | On time |
| Horley | 00:44 | On time |
| Redhill | 00:53 | On time |
| Purley | 01:03 | On time |
| East Croydon | 01:10 | On time |
| London Blackfriars | 01:40 | On time |
| London St Pancras (Intl) | 01:48 | On time |
| Kentish Town | 01:52 | On time |
| West Hampstead Thameslink | 01:56 | On time |
| Cricklewood | 02:00 | On time |
| Brent Cross West | 02:02 | On time |
| Hendon | 02:04 | On time |
| Mill Hill Broadway | 02:07 | On time |
| Elstree & Borehamwood | 02:11 | On time |
| Radlett | 02:15 | On time |
| St Albans | 02:21 | On time |
| Harpenden | 02:28 | On time |
| Luton Airport Parkway | 02:33 | On time |
| Luton | 02:37 | On time |
| Leagrave | 02:42 | On time |
| Harlington | 02:47 | On time |
| Flitwick | 02:51 | On time |
| Bedford | 03:03 | 02:58 |