Hi Moss,
I bought my Scuby from Quay Cars, a used Subaru specialist near Newport.
http://www.quayvehiclesolutions.com/
Although they didn't do it themselves (just sales) they'd had new belts put on mine by a local garage they recommend. Sorry I don't who that is but if you give Quay a ring, I'm sure they'll be able to fill you in.
Linx.