Police have released an image of a shirtless man walking in a London Underground station after reports of a sexual assault on a Jubilee line.
The woman is said to have been sexually assaulted between Southwark and London Bridge stations on June 30 just before 5pm.
An image has been released of a man who police believe could help with their investigation.
It shows a man walking around in just his shorts, with his hands appearing to be down his pants.
Alternatively, contact Crimestoppers anonymously on 0800 555 111.
