Britain today gave a go-ahead to a reserve force of armed officers to protect London against possible terror attacks. The 11-million-pound plan will involve training, buying guns and a new armoury for around 200 officers from the Territorial Support Group (TSG) who will be trained as a back-up force.<br/><br/>London's Deputy Mayor for Policing Sophie Linden today approved the contingency plan, which was ordered in the wake of last year's Paris attack which left 130 people dead.<br/>