Lines have reopened between London Euston and Watford Junction: normal service resumed 

Route(s) affected

Avanti West Cost between London Euston and Birmingham New Street / Wolverhampton / Wrexham General / Chester / Manchester Piccadilly / Liverpool Lime Street / Blackpool North / Lancaster / Glasgow Central / Edinburgh

London Northwestern Railway between London Euston and Tring / Bletchley / Milton Keynes Central

Description

Disruption following an earlier signalling fault in the Harlesden area has now ended.