I usually groom Theodore when he’s eating so that he has more reason to stick around then hop away. But Theodore is a major foodie, so this technique works well for him (this is also how I clip his nails).
The HairBuster is great, but it may be hard to get. I’m not sure if BB ships to the UK, but they do have them in the online shop (http://store.binkybunny.com/hairbuster-p116.aspx?noredirect) so it’s worth a shot. If you can’t get your hands on one, though, a regular flea comb (http://blog-photos.dogvacay.com/wp-content/uploads/2012/07/p-18275-30986-smpet.jpg) can also work. They are sold at most pet supply stores.
Always make sure to use these combs so that the brush glides through the fur horizontally, parallel to the skin, as their skin is quite sensitive and the less you scrape it with a brush, the better.
I use a combo of the HairBuster and a soft dog brush (http://catsnco.files.wordpress.com/2012/11/soft_bristle_brush_02.jpg) that I got from a dollar store. It works great!
Good luck!