Firstly, Fanny Price. Fanny the younger:
Isabelle Allen (also Cosette in the latest Les Mis, I believe)
The older Fanny:
Kimberly Nixon (Sophy Hutton in Cranford) But she might be a little too old :-(
Edmund Bertram: I can't decide!!
Rupert Evans (Frank Churchill/Hale)
Sir Thomas Bertram
Bill Paterson (Miss Potter)
Brenda Blethyn (Mrs Bennet from Fake P&P)
Jena Malone ( Lydia in ditto)
Carey Mulligan (although she may be too old) Kitty in ditto ditto. Coincidence?
Part 2 coming up! Any suggestions for Edmund? I have no idea!!