Overhead wires on a railway line have collapsed causing severe delays and cancellations.

The London Euston Twitter feed has reported 1,000 metres of overhead wires down at South Kenton - which is affecting services in both directions between Watford Junction and Euston.

Disruption is expected until 7pm, National Rail says.

Services may be cancelled, delayed by up to 30 minutes or revised.

A limited service is running on the London Northwestern Railway line - with road transport requested for a Hemel Hempstead to Watford Junction service, calling at Apsley and Kings Langley.

Overground services are running between Watford Junction and Euston.

For more details, including details of other services and compensation, visit https://www.nationalrail.co.uk/service_disruptions/244465.aspx