True they don't but if you read the t&c's it states "The photographer will retain copyright and where an image or images are reproduced, the photographer will be credited." So they'll credit you but there is no suggestion that you'd be paid. The read the bit below (#11 in the t&cs -
http://poty2008.dcmag.co.uk/3913562627509971805/rules.html ) - they reserve the right to use the images in print, at exhibitions, on the web, in promotional material, merchandising and even to enter it in other competitions... and no suggestion of ever paying for it. To me this reads a lot worse than the BW/WHE comp.