Hunt for Northern line sex attacker: Police launch CCTV appeal after two women assaulted on Tube

Detectives investigating two sexual assaults on Tube trains in London have launched a CCTV picture appeal. The first attacked happened around 8.40pm on Saturday, August 1, when a man sexually assaulted a woman on board a Northern line train at Waterloo Underground station.When she turned around, the man had exposed himself. He then left the service and boarded a northbound Northern line train.The same man then sexually assaulted another woman two days later, at around 8pm on August 3, again on board a Northern Line train, near Euston.Officers believe the man in the images could have information that may assist their enquiries.Anyone who recognises him is asked to text BTP on 61016, or call 0800 40 50 40, using the reference 716 of 1 August.Information can be given anonymously to Crimestopp