A CCTV camera caught a man knocking out a 16 year old girl with a blow to the head outside the Black Lion Pub in the Plaistow neighborhood of Newham in East London. The girl was treated for bruising to her head and cuts to her face and was later released from hospital. Police are looking for a black man with a muscular build and shaved head, approximately 6ft tall and between the ages of 25-30.