Mark was Chairman of the Judging Panel of the Veolia Environnement Wildlife Photographer of the Year Competition – the biggest and most prestigious competition of its kind in the world – for seven years from 2005 until 2011. Working with the two owners, BBC Wildlife magazine and the Natural History Museum, he continues to develop and steer the competition.

An accomplished and well-published photographer in his own right, Mark has an extensive collection of wildlife and conservation photographs, taken in more than 100 countries, which are sold through picture agencies around the world. His work covers everything from great white sharks and gaboon vipers to killer whales and komodo dragons. He has one of the largest collections of whale and dolphin pictures taken by a single photographer and has extremely rare images of many extinct and critically endangered species. He spends more than half the year travelling the world in search of wildlife and exploring wild places and is continually adding to his image collection.

Mark was selected as one of the world's 40 most influential nature photographers in Outdoor Photography magazine. Those listed were felt 'to go the extra mile to use their images and time to help highlight (and even fix) some of the most pressing environmental and conservation issues'. Click here to see the feature.

Mark was one of 58 European nature photographers chosen in 2008 to contribute to Wild Wonders of Europe - a massive photographic project designed to share Europe’s wildlife and natural wonders with more than 700 million people, through books and exhibitions. Mark's mission was to photograph whales from the air in Iceland.

In 2007, he completed a world tour to photograph endangered-mammal projects in no fewer than 13 different countries for the David Shepherd Wildlife Foundation.

Mark wrote the monthly four-page Photo Masterclass in BBC Wildlife magazine, which ran throughout 2006 to October 2007 (click on 'columns & articles' at the top of this page to see all the masterclasses), and a second series that ran through 2011/12. Each masterclass is packed with advice on a different specialised field of wildlife photography.

Mark was selected as one of the world's 40 most influential nature photographers in Outdoor Photography magazine. Those listed were felt 'to go the extra mile to use their images and time to help highlight (and even fix) some of the most pressing environmental and conservation issues'. Click here to see the feature.

Mark also runs popular wildlife photographer workshops - click here for more information.

(Click here for a printable version)