Complex sentence: Some of the zoos that he has worked for include Chester Zoo, London Zoo, the now closed Belle Vue Zoo in Manchester, Madrid Zoo and has also included some of the most famous circuses in the world.
Split into simpler sentences: Some of the zoos that he has worked for include Chester Zoo, London Zoo, the now closed Belle Vue Zoological Gardens in Manchester, and Madrid Zoo. He has also worked for some of the most famous circuses in the world.