| Location | Planned | Expected |
|---|---|---|
| London Euston | 12:09 | On time |
| Harrow & Wealdstone | 12:21 | 12:26 |
| Bushey | 12:26 | 12:30 |
| Watford Junction | 12:30 | 12:35 |
| Kings Langley | 12:35 | 12:40 |
| Apsley | 12:39 | 12:44 |
| Hemel Hempstead | 12:42 | 12:47 |
| Berkhamsted | 12:47 | 12:52 |
| Tring | 12:52 | 12:57 |
| Cheddington | 12:57 | 13:03 |
| Leighton Buzzard | 13:02 | 13:07 |
| Bletchley | 13:08 | 13:17 |
| Milton Keynes Central | 13:15 |