Hi PeterStapletons Tyres should cover your area. Ask them about brands such as Jupiter, Capitol and Marangoni. If no one else is selling them in your area, then you may be able to become a KEY Dealer for that tyre brand, which means you will get them even cheaper
http://www.stapletons-tyres.co.uk
If you register with Profit Link you will be able to order tyres on-line
http://www.stsprofitlink.co.uk
If you want a selling price guide then this site is quite handy
http://www.blackcircles.com
This site has lots of general info and links about tyres
http://www.tyres-online.co.uk
HTH
Peter