| Location | Planned | Expected |
|---|---|---|
| London Marylebone | 18:11 | 18:30 |
| Harrow-on-the-Hill | 18:24 | 18:42 |
| Rickmansworth | 18:34 | |
| Chorleywood | 18:39 | No report |
| Chalfont & Latimer | 18:43 | No report |
| Amersham | 18:47 | No report |
| Great Missenden | 18:55 | 19:11 |
| Wendover | 19:01 | 19:16 |
| Stoke Mandeville | 19:06 | 19:21 |
| Aylesbury | 19:12 | 19:27 |