One of London's busiest train stations has been evacuated because of a fire on a train.

Trains are unable to leave or arrive at Victoria station after the fire on a Gatwick Express service.

Tom Edwards, an antiques dealer from London, who was trying to get a train to visit his mother, said he spotted flames and black smoke coming from the train.

"There was just a little bit of flames by the wheels," he said. "They put it out and then started chucking everybody out of the building. There was no panic. It could have got pretty bad if they hadn't done something about it straight away."

London Fire Brigade confirmed a train was on fire and said crews were attending.

A staff member from Southeastern trains told waiting commuters: "It won't be opening up any time soon. Looking at these circumstances, it will be at least an hour." He added: "Everything's been stopped."

On its Twitter feed, Southern rail confirmed the damaged train was a Gatwick Express service, adding: "No one was hurt which was good."

Network Rail said: "The station has been evacuated. No services are running into or out of the station."

Station gates have been opened and commuters are being allowed in, although major delays are expected.