Click on link below to view CCTV
http://news.met.police.uk/videos/cctv-footage-of-people-police-wish-to-speak-with-21075
Between 17:00 and 17:25hrs on Sunday, 1 November, a 16-year-old boy was walking with a friend along Milton Road heading towards the shops on the A5, Edgware Road.
He was approached by a group of men armed with weapons who chased him down the road before assaulting him.
Police were called at 17:26hrs by one his friends who had found him with head injuries, concussed and missing a tooth near a block of flats on Tyrrel Way, NW9.
The London Ambulance Service attended and took the injured teenager to a central London hospital where he was treated for two stab wounds to his head. He underwent surgery for a three inch wound.
CCTV recovered from a nearby shop captured the three suspects chasing the victim along Milton Avenue.
The suspects are described as black men and of slim build:
Suspect 1 [ref: 195268] is wearing a dark hooded top – the centre of the hood had a reflective strip. He also wore light coloured trousers, white trainers and a large baseball cap. He was seen with a baseball bat.
Suspect 2 [ref: 195269] is wearing a dark grey top, trousers and black trainers with white soles. He is seen with an object in his right hand.
Suspect 3 [ref: 195271] is wearing a black coat over a grey hooded top with a reflective strip on the hood. He wore grey jogging trousers and carried a black bag.
A fourth man – who is not captured in the CCTV footage- was wearing a maroon jacket, black trousers and white trainers.
Anyone with any information is asked to contact Barnet CID via 101 quoting the reference number or anonymously on Crimestoppers on 0800 555 111.