Welcome to the forum and best of luck with the Magic Club!
I'm also in Warwickshire (Nuneaton) - albeit an East Londoner. I always promised I'd bring 'she who must be obeyed' back to her home town eventually.
Magic shop wise, there's Saturn Magic; not far away in Loughborough:
https://www.saturnmagic.co.uk/I've never visited or ordered from them (it's nothing personal, I just don't need to buy anything these days). However, they've got a good reputation within the magic community.
Although an online shop (and specifically dealing in coin magic) is my old mate Keith Bennett in Birmingham:
http://kbmagic.com/Hope that this info helps.