http://www.kinetics.org.uk/
I've traded with Ben Cooper (owner/operator) before. I bought my first Rohloff through him before they were available in the US, and a Heinzmann hub kit from him. Very nice man and easy to deal with.
He's in Glasgow, and will ship anywhere. Sorry, I've not had dealings with anyone in the Midlands. Glasgow is as close as I can get for you.