‘I was only trying to get my chain back’

A 16-year-old boy who helped chase down an aspiring rapper and stabbed him in the back was trying to get his chain back after being robbed by the victim, a court heard. Six youths, two aged 16 and four 17-year-olds, allegedly ‘celebrated’ after knifing Lewis Blackman 13 more times as he lay helpless on the pavement in Kensington, in the early hours of 18 February. Mr Blackman, 19, had earlier tried to gate crash a 16th birthday party the other…