POLICE want to find the man pictured after a mother travelling with her three-year-old daughter was sexually assaulted on a train.

The victim, who was travelling towards Gravesend, was approached by a man who boarded the train at Greenhithe.

He struck up a conversation with the pair and then sexually assaulted the mother at 10.30am.

The attacker is described as Asian with bulging eyes and in his early 20s. He was wearing a dark T-shirt and trousers.

British Transport Police investigating officer Detective Constable Malcolm McCulloch said: "I believe this man can help us with our inquiries and I would like anyone who can help us identify him to contact us."

Anyone with information about the September 10 incident should call 020 7983 7359 or 020 7391 5275, quoting reference B6.