Thanks for the response, the cables are flush currently, was just looking at a suitable way to make the cable ends safe.
So Chocbox in a sealed bag of some sort to save any water getting in would be the way to go, would ensure the ring circuit for the light was off as well.
I have a plasterer coming out in the next week to plaster a porch, it has a porch light and light switch in it which I need to remove and make safe, then reinstate once the job is done. The house was re-wired a few years back and I know all down stairs light are on the same ring circuit...