COPS have released CCTV images after a man is alleged to have exposed himself to a woman while on board a London Underground train.
The man British Transport Police want to speak to was on a Bakerloo line train at Waterloo at around 4.15pm on August 22.
He then left the train at Waterloo Underground station.
Officers would like to speak to the man pictured as they believe he may have information that could help their investigation.
Anyone who recognises him is asked to contact BTP by texting 61016 or by calling 0800 40 50 40, quoting reference 435 of 22 August.
You can also contact Crimestoppers anonymously on 0800 555 111.