Snake in the house

This lunchtime Mary saw the cat staring under the wardrobe in our bedroom, thinking she had seen a mouse or something Mary put the mop under and out wriggled a two foot long snake, she tried to get the cat out the room and called me. I put a leather gauntlet on and caught by the tail, it sunk its fangs into the glove then escaped again, i decided to usher it round the edge of the room then guide it out through the open door where it took refuge in a large plant pot. after taking a photo i chased it out of the garden. we identified as a venomous Iberian cross adder-it certainly was when i got hold of its tail!