| First train | 03:12 | |
|---|---|---|
| Last train | 23:26 | |
| Departure station | Watford Junction | |
| Arrival station | London Underground Zone 1-6 | |
| Journey time | From 15m | |
| Frequency | 173 trains per day | |
| Changes | 1 change | |
| Train operators | Avanti West Coast, Great Northern, London Overground, Southern, Thameslink |
For more money-saving tips on UK and European train travel, read our cheap train tickets guide.