An investigation is under way after a woman claimed she was robbed on a train from Mitcham Junction to Clapham Junction on Wednesday morning.

British Transport Police are investigating reports that a woman was mugged at about 10am on August 3 on the train by a man. 

A spokesman said: "Officers from BTP were alerted at 10.16am yesterday to a robbery on board a train at Mitcham station.

"The victim was on the train heading towards Clapham Junction when she was approached by a man. 

"Officers have since launched an investigation which will involve speaking with witnesses and seizing CCTV images."

Anyone with information is encouraged to contact BTP by sending a text to 61016 or by calling 0800 40 50 40 quoting reference 144 of 03/08/2016.