There is currently disruption to rail services between Stevenage and London, via Potters Bar, due to an object being caught on the overhead electric wires.

The object, between Welwyn Garden City and Potters Bar, is causing delays and cancellations in both directions.

Services will be diverted where possible and platform alterations at Welwyn Garden City can be expected.

Ticket acceptance has been organised on:

- Thameslink (between London Stations and Cambridge)

- London Underground (between London Stations and Finsbury Park)

- Greater Anglia services between Hertford East and London Liverpool Street

- London Buses between London Stations and Hadley Wood / Crews Hill

Problems are expected to last until at least 12 noon.