Operator: West Midlands Trains
Previous Calling Points:
| 03:30 | Milton Keynes Central | Unknown |
| 03:35 | Bletchley | Unknown |
| 03:42 | Leighton Buzzard | Unknown |
| 03:54 | Tring | Unknown |
| 03:59 | Berkhamsted | Unknown |
| 04:03 | Hemel Hempstead | Unknown |
| 04:07 | Apsley | Unknown |