I'm also new ish on here, and have also seen Naughty Sarah. I haven't written a review as it was at least a year ago that I saw her, but it was a positive experience.
I'd see her again, if it wasn't for two things:
1) I'm not yet at the point where I'll go back and see anyone
2) trying to make £70-100 vanish when you're in a relationship with shared finances is pretty difficult!
But the girl in question provides a good, if somewhat "vanilla" experience.