Four men were arrested at Watford Junction last night in connection with reports of a disturbance onboard a train.

Commuters faced delays of up to an hour after the British Transport Police were called to the 11.25pm London Euston to Wolverhampton service.

Officers interviewed staff and passengers before the train was released at 1am this morning.

Anyone with information should contact the British Transport Police on 0800 40 50 40, or call Crimestoppers anonymously on 0800 555 111.