You might see at the end of my Milton Keynes Trip Report I mentioned some information Ben Tribe gave out when I met him at Stage Door. Here goes: The UK Tour cast IS changing after Woking. (ie: November 22nd 2003).
The current cast contracts run out then, so that's around a 10 month contract. They were going to extend the contracts, but that fell through. In essence, he said that five performers are staying, but unfortunately he could only remember three, lol. Tugger (Stuart Ramsey) is staying, as is Gus/Bustopher (Patrick Clancy) and Rumpus/Alonzo (Matthew Cole). All the rest bar two are going.
Oh and could I step in with a observation that if the contracts are on for ten months, that could mean the Tour will run till at least September 2004. :D