BRITISH Transport Police want to speak to this suspect after a man was knocked unconscious while waiting for a train.

The 24-year-old victim was on platform 15 at Leeds railway station, at about 7.45pm, on Saturday, November 1, when he was assaulted.

Detective Constable Tom Eastwood, of BTP, said the victim was approached from behind by a man who punched him once in the face causing him to fall to the ground.

“The attacker ran off and boarded a train to Manchester Victoria, which called at Bramley, New Pudsey and Bradford Interchange, so it may be the man may reside in one of these areas," Det Con Eastwood said.

Anyone who recognises him should contact BTP on 0800 40 50 40, or text 61016, quoting reference PSUB/B5 of 18/11/2014. Information can also be passed anonymously to Crimestoppers on 0800 555 111.