just kerbed a wheel and put a buckle in it can this be repaired or will it have to be a new alloy its an original P1 alloy

Depends how bad really. Repair is possible :D

I took a buckled one to a place yesterday, they can take the buckle out for 20 quid, if it crakcs (he almost garaunteed it would) then its another fiver for welding, then a full refurb, so in total 50 quid