UPDATE 1-Centrica, Tokyo Gas join Anadarko's Mozambique LNG project as buyers

LONDON/TOKYO, June 15 (Reuters) - Britain's Centrica and Japan's Tokyo Gas have signed a non-binding agreement to buy liquefied natural gas (LNG) from Anadarko Petroleum's Mozambique project, a move that will bring the U.S. company closer to a final decision on the development.