Alex, if you're willing to buy across the pond (Europe mainland), try eBay germany. Bought my kit there. The triple tree cost me 140 euro's (97 pounds) and I bought a handlebar and handlebar weights with it. Total cost were 206 euro's (142 pounds) including shipping.
I just saw that 'my' seller has a new "buy now" auction for the same price as I had, 140 euro's.