It was when she was a backing singer in Goodbye Mr.Mackenzie so well before she was famous. They'd been supporting (iirc) The Primitives and she sauntered over to me and in a slightly drunken, thick Scottish brogue asked me if i'd like to accompany her back to where they were staying that night. After reading about her sexual exploits (the infamous breakfast story etc) i'm glad I declined, and as BOF says i've never seen the attraction.
As for Manning, he was in Frankley services late one Friday night and a mate had driven us there for some after pub grub. I'd had a few to drink (must have been a few to tolerate service station food) and took the opportunity to tell him what I thought of him. His answer was a simple '**** off son'.
So there you go.