Stewart,
A list of suppliers by touting their good/not-so-good qualities shouldn't be taken as an endorsement. But: IMHO, Moss has the best inventory, marginal advice, good return policy. Victoria British has good inventory, ZERO advice and good return policy. TRF has fair inventory (although they oft stock things the others don't have), first rate advice (if you talk to Dave, who knows everything there is to know about Triumphs) and good return policy. Moss UK has things you can't get over here, but will pay, as well as Rimmer. Best bet: shop'em all, as everyone else does.
Good luck
Bill