POLICE want to speak to this man about an alleged sex assault on a train through Huddersfield.

British Transport Police has released CCTV images of a man they would like to speak to in connection with the assault on board a train from Hull to Manchester on January 23.

The victim, an 18-year-old woman, was travelling on board the 2.38pm train.

Anyone with any information is asked to contact BTP free on 0800 40 50 40 quoting incident number 124 of 26/1/09 or call Crimestoppers anonymously on 0800 555 111.