The London Borough of Lambeth has said it is "thinking hard" about how to prevent tragedies like the murder of teenage youth worker Nathan Foster earlier this month. Foster, 18, who was studying for an NVQ in play work, worked at an after-school club and at Ebony Horse Club, an organisation aiming to engage young people through horse-riding. Ros Spearing, founder and director of Ebony Horse Club, said: "Nathan had attended the group as a young person and as a youth worker. He was one of the first young people to join and impressed people all over London. Later, he...