Daniel Jarrett, 18, who knew him from Winchmore Secondary School in Enfield, said: "It's worse because he was the goody - while others growing up were in trouble on the streets, he was at home with his comics, playing on his computer." Another friend, who asked not to be named, said: "He was just a harmless IT geek. He was really straight and hard-working, a model student at school. I looked up to him."