Hertford Loop Line
The Hertford Loop is a Great Northern (GTR) suburban route that diverges from the East Coast Main Line at Alexandra Palace and runs via Bowes Park, Enfield Chase, Crews Hill, Cuffley and Bayford to Hertford North, rejoining the ECML at Stevenage.
About the Hertford Loop Line
Off-peak services terminate at Moorgate in the City via the Northern City tunnel; peak services run to/from King's Cross.
It is operated exclusively by Class 717 Desiro City units fitted for tube-tunnel operation between Drayton Park and Moorgate.
Key stations on the Hertford Loop Line
- Alexandra PalaceECML junction, Ally Pally venue
- Enfield ChaseBusiest mid-loop stop
- Crews HillGarden centres corridor
- CuffleyHertfordshire green belt
- Hertford NorthLoop midpoint, Hertford town centre
FAQs about the Hertford Loop Line
Where do Hertford Loop trains terminate in London?
Moorgate (off-peak, via Drayton Park tunnel) and King's Cross (some peak services).
Is the Hertford Loop part of the Northern City Line?
Hertford Loop services share the Northern City tunnel from Drayton Park to Moorgate, but the Loop itself is mainline north of Finsbury Park.
Does Oyster work on the Hertford Loop?
Yes — within London zones; beyond Crews Hill (Zone 6) standard National Rail fares apply.