PLUMBING-American to english?

Question:if i bought a shower manifold in the usa and took it to england are the sizes gonna differ like the manifold takes a 1/2in copper and the english takes 15mm i think and i don't think they do OD and ID there. if i buy it in usa will it fit in eng?

Answers:
It's a long time since I did plumbing in the UK but I think you should be fine with the manifold. The sizes are almost interchangeable and Imperial fittings are readily available for older plumbing installations.