| Location | Planned | Expected |
|---|---|---|
| London Kings Cross | 23:27 | On time |
| Finsbury Park | 23:33 | On time |
| Alexandra Palace | 23:38 | On time |
| Potters Bar | 23:46 | On time |
| Hatfield | 23:52 | On time |
| Welwyn Garden City | 23:58 | On time |
| Welwyn North | 00:01 | On time |
| Knebworth | 00:05 | On time |
| Stevenage | 00:09 | On time |
| Hitchin | 00:14 | On time |
| Letchworth Garden City | 00:20 | On time |
| Baldock | 00:23 | On time |
| Ashwell & Morden | 00:28 | On time |
| Royston | 00:32 | On time |
| Meldreth | 00:36 | On time |
| Shepreth | 00:40 | On time |
| Foxton | 00:42 | On time |
| Cambridge | 00:54 | 00:50 |