POLICE are appealing for witnesses following an attack on a teenage boy.

The 17-year-old was set upon by a group of up to 20 youths outside the Chadwell Heath campus of Redbridge College at about 3pm on March 26.

Officers have said there was no obvious reason for the attack.

The victim escaped serious injury, and suffered only a cut to his finger, which was later stitched at Queens Hospital.

Anyone with information is urged to contact DC Tony Bowles on 8345 2767.