| Location | Planned | Expected |
|---|---|---|
| London Kings Cross | 23:06 | On time |
| Finsbury Park | 23:12 | On time |
| Alexandra Palace | 23:17 | On time |
| Potters Bar | 23:26 | On time |
| Hatfield | 23:32 | On time |
| Welwyn Garden City | 23:38 | On time |
| Welwyn North | 23:40 | On time |
| Knebworth | 23:44 | On time |
| Stevenage | 23:48 | On time |
| Hitchin | 23:53 | On time |
| Letchworth Garden City | 23:59 | On time |
| Baldock | 00:02 | On time |
| Ashwell & Morden | 00:07 | On time |
| Royston | 00:12 | On time |
| Meldreth | 00:16 | On time |
| Shepreth | 00:20 | On time |
| Foxton | 00:22 | On time |
| Cambridge | 00:35 | 00:32 |