John Downer / Mike Richards filming in cage beside vehicle Africa

Doug Allan / Doug Allan filming under sea ice in Lancaster Sound, Arctic Canada

NEIL NIGHTINGALE / Filming saguaro cactus flowers Arizona, USA

Doug Allan / Cameraman Doug Allan on location to film polar bears. Norway 1997 Hopen Island, Svalbard -25C

Neil Lucas / Richard Ganniclifft filming bush fire in Western Australia, on location for BBC series 'Private Life of Plants' 1993

Jabruson / Mountain gorilla (Gorilla g. beringei) being filmed in the wild. DR Congo (formerly Zaire), Central Africa

Jabruson / Mountain gorilla (Gorilla g. beringei) being filmed in the wild. DR Congo (formerly Zaire) Central Africa

Jabruson / Mountain gorilla inspects film camera, DR Congo (formerly Zaire), Central Africa

Georgette Douwma / Martha Holmes with Giant Clam during filming of BBC television series 'Seatrek' 1991

Ben Osborne / Ian McCarthy in Antarctica filming Blue-eyed cormorants for BBC television series 'Life in the Freezer'

John Downer / Remote camera in protective housing and bait used to film wild lion close up for BBC television series 'Lifesense'

John Downer Productions / 'Plopcam' - remotely controlled video camera disguised as dung, used to film elephant herd for BBC television film 'Elephants - Spy in the Herd' 2003