If you order a pair online (normally very good deals there Caz) you can get Ade at BikeAid to fit them for you for about £20 - £30 over in Trowvegas . Normally quite quick and helpful and you may get a word in edgeways while hes chatting too
http://www.nationalbiketyres.co.uk/p...s/cat_264.html one of many sites out there