| Location | Planned | Expected |
|---|---|---|
| London Euston | 00:09 | On time |
| Harrow & Wealdstone | 00:21 | On time |
| Bushey | 00:26 | On time |
| Watford Junction | 00:29 | On time |
| Kings Langley | 00:34 | On time |
| Apsley | 00:38 | On time |
| Hemel Hempstead | 00:41 | On time |
| Berkhamsted | 00:46 | On time |
| Tring | 00:51 | On time |
| Cheddington | 00:56 | On time |
| Leighton Buzzard | 01:03 | On time |
| Bletchley | 01:09 | On time |
| Milton Keynes Central | 01:15 | On time |
| Wolverton | 01:19 | On time |
| Northampton | 01:32 | On time |