| Location | Planned | Expected |
|---|---|---|
| London Marylebone | 14:27 | |
| Harrow-on-the-Hill | 14:39 | |
| Rickmansworth | 14:49 | |
| Chorleywood | 14:54 | |
| Chalfont & Latimer | 14:58 | |
| Amersham | 15:02 | |
| Great Missenden | 15:10 | |
| Wendover | 15:16 | |
| Stoke Mandeville | 15:20 | |
| Aylesbury | 15:25 | |
| Aylesbury Vale Parkway | 15:33 |