Do you recognise this man?

Detectives investigating a sexual assault are today releasing this image in connection.

The incident happened around 5.30pm on Thursday 17 August last year.

A 19-year-old woman was travelling on the Piccadilly line when a man who had been sitting next to her stood up and deliberately fell onto her when the tube reached Holborn station.

He then sexually assaulted her before standing up and smiling at her.

Detectives would like to speak to the man in the image who they believe may have information that could help their investigation.

Anyone who recognises him is asked to contact British Transport Police by texting 61016 or by calling 0800 40 50 40 quoting reference number 2300099136.