CamUK Discworld cast

[karohemd]

While reading the latest PTerry, I just had a silly idea.
If the CamUK were to stage a Discworld play, what would the cast look like?
I immediately came up with some ideas but I need more suggestions:

Rincewind - Robin or Jon Argles
The Patrician - Dave Wade
Granny Weatherwax - Michele Minett
Nanny Ogg - Kath Minchin
Ponder Stibbons - Ozzy (played him twice at DW freeforms at GenCon)
The Librarian - Simon Francis
Casanunda - Mouse
Leonard da Quirm - Andy D (if he's not a Nocker, nobody is)

I'm running out of ideas, please help