| Planned | Expected | |
|---|---|---|
| London Marylebone | ||
| Harrow-on-the-Hill | 22:09 | On time |
| Rickmansworth | 22:19 | |
| Chorleywood | 22:24 | |
| Chalfont & Latimer | 22:28 | |
| Amersham | 22:32 | |
| Great Missenden | 22:40 | |
| Wendover | 22:46 | |
| Stoke Mandeville | 22:50 | |
| Aylesbury | 22:55 | |
| Aylesbury Vale Parkway | 23:03 |