Analogic have new UK keyboards, they may be able to supply cases but they are not listed, you could ask them for whatever parts you require.
link
analogic.co.uk/amiga-new-amiga-a1200-uk-keyboard-new-amiga-1200-uk-keyboard.asp?bc=no
From the picture of the new A1200 keyboard on Analogic's site, it looks to be yellow and used!
... Rest assured though that they are brand new and brilliant white, and I know this because I've bought one myself from Analogic.
