| Planned | Expected | |
|---|---|---|
| London Marylebone | 19:40 | On time |
| Gerrards Cross | 19:59 | On time |
| Seer Green | 20:04 | On time |
| Beaconsfield | 20:09 | On time |
| High Wycombe | 20:16 | On time |
| Princes Risborough | 20:25 | On time |
| Bicester Village | 20:44 | On time |
| Islip | 20:52 | On time |
| Oxford Parkway | 20:56 | On time |
| Oxford | 21:03 | On time |