Material/Valve Suppliers (UK)

[SNDM]

I was wondering where everyone got their materials for building their spudguns. I live in the UK, so companies with cheap delivery to UK or based in UK would be great if you know of any.

I personally use Pipestock, its good for pipe and fittings, glue primer, etc.
But it sadly lacks in the valve department. At least for all the universally recommended valves anyway.
www.pipestock.com

Im thinking of making a copper gun, at my local B&Q i've seen some copper pipes and fittings, but B&Q is sadly going for home decor these days, and base supplies are harder to come buy.
www.diy.co.uk

If this has already been stated before, I apologize, I probably shouldve scoured the search more. If this gets popular enough, maybe a sort of catalogue of known suppliers may be in order. But thats a pipe dream for now.