The NHC is the National Hamster Council which is the overall governing body of the hamster fancy. There are three regional clubs and you can join one (yours would be Northern Hamster Club
http://www.northernhamsterclub.co.uk/
If you join you get a magazine every month which has articles and show reports all about hamsters in in.
Hamsterman we have tried the Bunny. Our dwarfs seem to enjoy it but the syrians seem just the same as with Harry. As it is quite expensive we will stick with Harry personally but I know some people like the Bunny and are moving on to that. Be sure to introduce it gradually to give their systems time to adjust