Look up ‘Au Pair Girls’ and she is sans clothes...
I have that (and the blu-rays of UFO) and I think she’s sexier WITH clothes.
Maybe that’s because, naked, I keep having these weird visions of Nick Drake with breasts... LOL.
Anyway (ahem) UFO is a lot of fun. Some great episodes in there, and the writers weren’t afraid of taking chances (particularly near the end of the series).