An Adder. Britain’s only poisonous snake and very easy to recognise. This specimen looks like a male; males tend to appear earlier than females which are slightly larger and more brown in colour. The vivid black markings are more distinguished in the male of the species.
The photographs were taken by a Mr. Barrie Wray who was sitting with his partner when they, and the snake, were disturbed by a dog out walking with a group from Walkitcornwall, who offer guided walking trips around the Lizard and other areas of Cornwall. More Here