I'm looking to do the same, trying to justify the expense with Germany round the corner, and thinking its a place I would particularly like to be able to stop at!
I have been looking at these...
http://www.apracing.com/product_deta...with_pads.aspx
http://www.interex.co.uk/motorsport/...t.php?pid=1235
... £636 for mine for the discs and pads..
Looking at AP's site it appears Camberley Autofactors are a dealer for them
Has anyone else tried these?