A FIRE alarm at Three Bridges station is causing major rail disruption this morning (Friday).
The signalling centre at the station had been evacuated while emergency services investigate the problem.
Staff are now reportedly being allowed back into the building and services are beginning to run again.
Southern services had been unable to run between Brighton/Horsham and East Croydon and also between Portslade and Falmer.
Commuters faced delays of up to 60 minutes on all other routes.
Tickets are valid on London Underground and buses.
First Capital Connect services between East Croydon and Brighton have also been cancelled, with delays of 30 minutes. Passengers may use tickets on Southern, East Midlands Trains and via London Underground via any reasonable route.
London Overground services between West Croydon and Sydenham are also unable to run, with passengers advised to use buses between Gatwick Airport and Redhill.
There is currently heavy traffic on the A23 Brighton Road between Merstham and Croydon at the Hollymeoak junction in Coulsdon.
For those travelling into London, there are delays reported on the Circle, District and Hammersmith and Fulham lines.
Check back for travel updates until 9am. If you know of an incident we haven't reported, email gareth.davies@essnmedia.co.uk.
