 These include Chester Zoo, London Zoo, Chessington Zoo, the now closed Belle Vue Zoological Gardens in Manchester, Flamingo Park Zoo in North Yorkshire, Windsor Safari Park, Parc Astérix near Paris, Marine Land, South of France and Madrid Zoo.He has also worked for some of the most famous circuses in the world.In 1976 he founded the International Zoo Veterinary Group (IZVG) with his partner Andrew Greenwood and the Dinnes Memorial Veterinary Centre in Santa Clarita, California.