British Transport police are investigating a serious assault which occurred on the 10th July on board a London Underground service. They are now appealing for witnesses to the assault and have provided details on the suspect and the incident. The assault happened on a Victoria Line service between Stockwell and Vauxhall at around 11:10 am, where a man was repeatedly kicked. The assailant has been described as in his mid- to late 20s, 6 feet tall, South Asian, and of medium build. At the time of the assault, he had a full black beard, wearing a baseball hat, a blue t-shirt, black shorts, a backpack and a sling bag.