Soldato
Aspiring boxer...close enough.Only needed promising footballer and good student for the full house.
I can't find a link for the knife though there is a picture of him making an apparent gun sign.
Edit found it in the BBC articles:
Kerry-Ann Honeygahn told the BBC how a few weeks ago, her friend took a knife away from the boy.
The 38-year-old youth mentor said she "wasn't surprised" to hear of the violence.
"Another young life has been taken on the streets of London."
Admittedly I keep a swiss army knife in my car, but not on me.