Many thanks for your welcome, Copperfox, and many apologies for not replying sooner. I must be honest I had no real idea of what the average age of members of The Dancing Lawn might be. On the one hand, I thought they might be young(ish) as the Chronicles of Narnia were written as children's books. On the other hand, I thought there might be older members, who used to enjoy the books when they were younger.
I like your ideas for Blake's 7, provided that Servalan plays a prominent role. Thoroughly evil and nasty that one, like Jadis!
Must close, library is about to shut!
All the best,
David