British Transport Police (BTP) have released an image of a man they would like to speak to after two young children were reportedly assaulted in west London.
The incident happened at about 16:00 GMT on 11 December at White City Underground station, according to police.
The BTP said a woman was in the station with two young children when a man entered and kicked the children, causing them to fall over.
The man then “immediately walked away into the station and boarded an eastbound Central Line train”.