Police have released a CCTV image after a woman was sexually assaulted on a busy train during rush hour on April 15. The terrifying attack happened on a train running between Leeds and Huddersfield in West Yorkshire during rush hour.

The grainy still shows a man with dark hair and a beard wearing black top with a silver zip and carrying a white JD Sports bag over his left shoulder. British Transport Police, which monitors the rail network for England, Wales and Scotland, said it believes the man "may have information which could help with their investigation”.

In a statement, the British Transport Police (BTP) said: “Do you recognise this man?

"Officers investigating a sexual assault on board a train between Leeds and Huddersfield have today released this image in connection.

“Shortly after 7pm on Tuesday, April 15, a man sexually assaulted a woman on the service. Officers believe the man in the image may have information which could help with their investigation."

The statement added: “Anyone who recognises him is asked to contact British Transport Police by texting 61016 or by calling 0800 40 50 40, quoting reference 25 of 16 April.

“Alternatively, you can contact Crimestoppers anonymously on 0800 555 111.”

BTP officers cover over 10,000 miles of railway and 3,000 stations and depots. The force also polices the London Underground, Docklands Light Railway, West Midlands Metro, Tramlink, part of the Tyne and Wear Metro, Glasgow Subway and the London Cable Car.