Delays between London and Stevenage via Potters Bar 

Route(s) affected

Grand Central between London Kings Cross and Bradford Interchange / Sunderland

Great Northern between Moorgate and Welwyn Garden City, and also between, and also London Kings Cross and Letchworth Garden City / Cambridge / Ely / Peterborough / Kings Lynn

Hull Trains between London Kings Cross and Hull / Beverley

LNER between London Kings Cross and Lincoln / Leeds / Hull / Bradford Forster Square / Harrogate / York / Edinburgh / Aberdeen / Inverness

Lumo between London Kings Cross and Edinburgh

Thameslink between Brighton and Cambridge, between Horsham and Peterborough, and also between Sevenoaks and Welwyn Garden City

Description

Disruption caused by a fault with the signalling system between London and Stevenage via Potters Bar has now ended.