Good heavens Jon, a six-foot long carpet python (called Monty?) and a blue-tongued skink? I suppose this was not in Norfolk!
Reminds me of Hissing Sid, a very long grass snake that our five cats cornered in our neighbour's back garden. It was coiled up under a large plant pot supporter, hissing like anything, while they all stood round fascinated, poking it with tentative paws. Neighbour and I gently got it onto a big shovel and popped it into the ditch, after I'd shepherded the five miscreants indoors. They didn't half give me some dirty looks for spoiling their fun!
Grass snakes, although about five feet long, aren't venomous, but can give a nasty bite. This one had been eating my neighbour's koi fish in her pond. It may have been a female, because we found some baby grass snakes in a puddle later that year. We left them to shuffle off. (It's illegal to kill native reptiles in UK)