I've got a WTB Dual duty Xc rear wheel, black parallax hub, black spokes (although some need touching in) silver nipples, it's reasonably straight & smooth. £6.00 (beer tokens) & whatever postage comes to, if that's any good?
Should've asked the question, I'm just over in Totton so not far from you. The guy at my local tip is good as gold.
Once did me a pair of good Mavic cosmics for a tenner
Auction is your best bet for that. Anything BMX is crazy money these days! Check out completed listings on Ebay, I think you'll be pleasantly surprised. Get those tyres blown up!
Just to give you an idea these new DX pedals made £175...