| Location | Planned | Expected |
|---|---|---|
| London Marylebone | 09:57 | |
| Harrow-on-the-Hill | 10:09 | |
| Rickmansworth | 10:19 | |
| Chorleywood | 10:24 | |
| Chalfont & Latimer | 10:28 | |
| Amersham | 10:33 | |
| Great Missenden | 10:40 | |
| Wendover | 10:46 | |
| Stoke Mandeville | 10:50 | |
| Aylesbury | 10:55 | |
| Aylesbury Vale Parkway | 11:03 |