| Location | Planned | Expected |
|---|---|---|
| Aylesbury Vale Parkway | 11:13 | On time |
| Aylesbury | 11:18 | On time |
| Stoke Mandeville | 11:23 | On time |
| Wendover | 11:27 | On time |
| Great Missenden | 11:33 | On time |
| Amersham | 11:40 | On time |
| Chalfont & Latimer | 11:45 | No report |
| Chorleywood | 11:48 | No report |
| Rickmansworth | 11:53 | No report |
| Harrow-on-the-Hill | 12:04 | 12:08 |
| London Marylebone | 12:23 | 12:31 |