All the guides i've read have used hot smoking so not sure about the cold smoking :/ A lot of guides use a normal campsite with a wooden frame over it and th pelt stretched out on the frame. I'm hoping to find a more practical way of doing it!
Thank you very much Andrew, we are near Birmingham though, so a bit too far!
just looked on ebay for cold smoker and theres a small cylinder one on there that looks like it might work, i think cold smoking would be ok as its not the heat but the smoke that does the magic (apparently!).