Try this place first,good choice of tyres and wheels.
http://www.flyinghigh.me.uk/index.html
I've ordered stuff from Coastguard before, a Libre Vmax, Turf tyres, Roll bar and cover and offer of free Kheo T-shirt all in one order. Promised next day delivery but took a week for the Vmax to arrive following several phone calls and resending, further week for the tyres as out of stock (phone call would have been nice to let me know), then the roll bar finally turned up minus the cover. The cover took another month and about half a dozen phone calls (all by me, not once by Coastguard to keep me informed even though they promised several call backs). The T-shirt has never materialized even though they claim to have sent it several times with the last call saying it would be sent recorded delivery, that was about 3 weeks back. All in all I've been waiting 4 months for the complete delivery and have now conceded the T-shirt will never appear. Talk about customer service!!
It's a shame really as several people have asked me about where the roll bar came from but how can I recommend they call Coastguard? Plus I've order a lot more equipment since but decided to go elsewhere and had no problems.
Please note this is my own experience and perhaps I've just been unfortunate but it certainly has tested my patience.
Sorry about the length of the reply and rant over.
Cooperman.