| Planned | Expected | |
|---|---|---|
| London Kings Cross | 23:02 | On time |
| Finsbury Park | 23:08 | On time |
| Alexandra Palace | 23:13 | On time |
| Potters Bar | 23:21 | On time |
| Hatfield | 23:27 | On time |
| Welwyn Garden City | 23:33 | On time |
| Welwyn North | 23:35 | On time |
| Knebworth | 23:39 | On time |
| Stevenage | 23:44 | On time |
| Hitchin | 23:49 | On time |
| Letchworth Garden City | 23:55 | On time |
| Baldock | 23:58 | On time |
| Ashwell & Morden | 00:03 | On time |
| Royston | 00:08 | On time |
| Meldreth | 00:12 | On time |
| Shepreth | 00:15 | On time |
| Foxton | 00:18 | On time |
| Cambridge | 00:29 | 00:26 |