There are severe delays to train services due to a signalling fault.

Southern Rail said just before 7am that no trains can run to and from Littlehampton due to the signalling problem.

Trains from Littlehampton and Brighton will start and terminate at West Worthing.

All trains to Littlehampton and Bognor are cancelled.

An update at 7.20am stated that Network Rail had fixed the signalling fault but due to the "number of trains and crews in the wrong place" there would be delays.

The disruption is expected to last until 9.30am.

Delays have now cleared.