Cheers MC. I've spoken to PlanetX and they won't move on the spec. 82mm rims front and back probably too much for me to handle. The wind never drops below 15mph in these parts! I'll wait and see if I can stretch to the Exocet 2 with SRAM.
Talk to the bike shops. Whenever I've bought a bike through the cycle to work scheme my bike shop treats it as £1000 voucher put towards any bike you like. I've just paid the difference. I'm sure not all shops think the same, but it's worth asking!