| Location | Planned | Expected |
|---|---|---|
| Bedford | 00:14 | On time |
| Flitwick | 00:26 | |
| Harlington | 00:30 | |
| Leagrave | 00:36 | |
| Luton | 00:41 | |
| Luton Airport Parkway | 00:44 | |
| Harpenden | 00:49 | |
| St Albans | 00:55 | |
| Radlett | 01:01 | |
| Elstree & Borehamwood | 01:04 | |
| Mill Hill Broadway | 01:08 | |
| Hendon | 01:12 | |
| Brent Cross West | 01:14 | |
| Cricklewood | 01:16 | |
| West Hampstead Thameslink | 01:19 | |
| Kentish Town | 01:25 | |
| London St Pancras (Intl) | 01:31 | |
| London Blackfriars | 01:39 | |
| East Croydon | 02:06 | |
| Purley | 02:13 | |
| Horley | 02:25 | |
| Gatwick Airport | 02:30 | |
| Three Bridges | 02:36 |