A knife man launched an attack on a fellow passenger on the London Underground in the early hours of Sunday morning.

A spokeswoman for the British Transport Police (BTP) confirmed they were called to reports a man had been assaulted on a Tube at South Wimbledon underground station at around 4.10am on Sunday, March 19.

The victim was slashed in the face and treated by paramedics at the station.

A 51-year-old man from Colindale, Barnet, was arrested on suspicion of possession of a knife blade / sharp pointed article in a public place.

He has been bailed until Monday, April 17, while enquiries are ongoing.

The Northern Line was closed between Stockwell and Morden until 5.10am.