| Location | Planned | Expected |
|---|---|---|
| London Euston | 00:09 | |
| Harrow & Wealdstone | 00:21 | |
| Watford Junction | 00:30 | |
| Kings Langley | 00:35 | |
| Apsley | 00:38 | |
| Hemel Hempstead | 00:41 | |
| Berkhamsted | 00:46 | |
| Tring | 00:51 | |
| Cheddington | 00:56 | |
| Leighton Buzzard | 01:03 | |
| Bletchley | 01:09 | |
| Milton Keynes Central | 01:18 | |
| Wolverton | 01:23 | |
| Northampton | 01:37 |