| Planned | Expected | |
|---|---|---|
| Bedford | ||
| Flitwick | 23:48 | On time |
| Harlington | 23:52 | 23:54 |
| Leagrave | 23:58 | On time |
| Luton | 00:01 | 00:03 |
| Luton Airport Parkway | 00:05 | On time |
| Harpenden | 00:11 | On time |
| St Albans | 00:17 | On time |
| Radlett | 00:23 | On time |
| Elstree & Borehamwood | 00:26 | On time |
| Mill Hill Broadway | 00:30 | 00:32 |
| Hendon | 00:34 | On time |
| Brent Cross West | 00:36 | 00:38 |
| Cricklewood | 00:38 | 00:41 |
| West Hampstead Thameslink | 00:42 | On time |
| Kentish Town | 00:46 | 00:48 |
| London St Pancras (Intl) | 00:52 | On time |
| London Blackfriars | 01:01 | On time |
| East Croydon | 01:28 | On time |
| Purley | 01:34 | |
| Horley | 01:52 | |
| Gatwick Airport | 01:56 | |
| Three Bridges | 02:03 | |
| Haywards Heath | 02:13 | |
| Brighton | 02:28 |