Very good prices on sets of 4 tyres at the moment from Demon Tweeks on ebay. Includes Toyo TR1, Toyo Proxes Sport and Uniroyal Rainsport 3.
Remember to enter code PLENTIFUL at checkout to get the 25% discount. to get these prices. Free delivery included and got good reviews. You don't have to buy 4 tyres, you also get 2 if you like.