Thanks for the comments guys. I'm hoping the clutch will last a while after the map, I've seen a couple of posts where the uprated clutch is about £230, but then it's the fitting which will probably be another £3-400 I'd guess?! So it's more realistically £1k for a useable re-map then rather than the £350 just for the map.
I've had airfilters and induction kits on cars before, but they've only been <£60 I think. It just seems alot of money for a few extra bhp that might not even be that noticeable.
Sorry Nomad, it's me trying to sneakily type whilst still appearing to be working not being clear.

I didn't mean a chip previously, I just ment similiar to superchips in that it's a generic map, not a RR map specifically to the car and taking into account modifications etc.
Cheers for the responses everyone.
I'll have to ask my girlfriend now for extra pocket money to save up for when the clutch gives up!
Thanks,
Mark