| Location | Planned | Expected |
|---|---|---|
| London Marylebone | ||
| Harrow-on-the-Hill | 12:09 | On time |
| Rickmansworth | 12:19 | 12:24 |
| Chorleywood | 12:24 | 12:29 |
| Chalfont & Latimer | 12:28 | 12:33 |
| Amersham | 12:32 | No report |
| Great Missenden | 12:40 | 12:43 |
| Wendover | 12:46 | 12:48 |
| Stoke Mandeville | 12:50 | 12:54 |
| Aylesbury | 12:55 | 12:58 |
| Aylesbury Vale Parkway | 13:03 | 13:05 |