| Location | Planned | Expected |
|---|---|---|
| London Marylebone | 12:27 | On time |
| Harrow-on-the-Hill | 12:39 | On time |
| Rickmansworth | 12:49 | On time |
| Chorleywood | 12:54 | On time |
| Chalfont & Latimer | 12:58 | On time |
| Amersham | 13:03 | On time |
| Great Missenden | 13:10 | On time |
| Wendover | 13:16 | On time |
| Stoke Mandeville | 13:20 | On time |
| Aylesbury | 13:25 | On time |
| Aylesbury Vale Parkway | 13:33 | 13:30 |