I think Douglas [Douglas Adams] was a real one-off. He was so clever and so intelligent and so well read in real science that he could make science fiction work as well as it did. And just such fun to have around, he was just such a lovely man.

I think the kind of unexpected I really love is when you open books and the actual way of writing is different and interesting. Like reading Virginia Woolf for the first time or Lawrence Durrell for the first time.

Although the French were very friendly and helpful. On one location we were to film at the top of the Eiffel Tower but we couldn't, as it was so misty with four inches of snow on the ground. We couldn't see a thing but we finally got it done.

Don't ask me who my favourite monster was because I'm sick of saying Tom Baker.

We were only there for five days and during that time Tom was a bit annoyed that the French were more interested in me and my schoolgirl outfit than him and his long scarf.

Oh, I have to say Romana; she was much more fun to do but I did enjoy the Princess when she was turning bad.

I like that totally mixed up kind of eclectic group of personal props and bits of costume and I think the fun of doing that is where I was very lucky with Doctor Who.