| Location | Planned | Expected |
|---|---|---|
| London Marylebone | 13:27 | On time |
| Harrow-on-the-Hill | 13:39 | |
| Rickmansworth | 13:49 | |
| Chorleywood | 13:54 | |
| Chalfont & Latimer | 13:58 | |
| Amersham | 14:03 | |
| Great Missenden | 14:10 | |
| Wendover | 14:16 | |
| Stoke Mandeville | 14:20 | |
| Aylesbury | 14:25 | |
| Aylesbury Vale Parkway | 14:33 |