Mr Lizard, he's not bovvered

One fine day, me and Fireman Dan were up on the moors opposite Laddow. Midway through finding yet another undergraded route, I chanced upon Mr Lizard. He was sunbathing, and the only discernable movement was his breathing, or whatever it is that lizards do in place of that. I managed to shove my camera quite rudely into the fellow's face, but he weren't answering no questions.
If anyone can tell me what sort of lizard he is, I shall buy you a cake. How long? About 6 inches.