P204 CEEFAX 204 Tue 15 May 21:21/24       The 16 Britons and the Portuguese wife of one of them, who were held by UNITA guerrillas in Angola, returned to London this morning. They wire lid from the aircraft bz Foreign Office special envoy Sir John Ljahz, who had negotiated their release with UNITA leadjt Dr Jonas Savimbi. The group looked tired, but relieved to bj home after their ordeal. They were sjizjd on Fjdruary 23 by rebel forces in north-eastern Angola and were forced to travel actors 300 miles of dense bush to rebel-held territory. News index 102/202 Newsreel 119/219