Apparently its an American food. A seller on ebay is selling various types for £19.99 for 7.5kg with £3.99 postage regardless of quantity ordered. I just wondered if this would be good for rescues. Here's the ingredient list - it looks good to me but not sure.
http://cgi.ebay.co.uk/Pro-Pac-Hairball-Formula-Super-Premium-Cat-Food-7-5kg_W0QQitemZ150149870086QQihZ005QQcategoryZ20739QQrdZ1QQssPageNameZWD1VQQcmdZViewItemhttp://www.propacpetfood.com/cats/index.tpl?SKU=20020102160228Chicken Meal, Rice Flour, Ground Yellow Corn, Chicken Fat (preserved with mixed Tocopherols, a source of natural Vitamin E), Corn Gluten Meal, Dried Beet Pulp, Fish Meal, Dried Egg Product, Dried Whey, Natural Flavoring, Brewers Dried Yeast, Yeast Culture, Salt, Potassium Chloride, DL-Methionine Hydroxyanalogue, L-lysine, Wheat Germ Meal, Choline Chloride, Vitamin E Supplement, D-activated Animal Sterol (source of Vitamin D3), Taurine, Vitamin A Acetate, Niacin Supplement, D-Calcium Pantothenate, Vitamin B12 Supplement, Riboflavin Supplement, Thiamine Mononitrate, Ascorbic Acid, Biotin, Pyridoxine Hydrochloride (Vitamin B6), Inositol, Folic Acid, Manganous Oxide, Ferrous Sulfate, Copper Sulfate, Zinc Oxide, Ethylenediamine Dihydriodide, Zinc Proteinate, Manganous Proteinate, Iron Proteinate, Magnesium Proteinate, Copper Proteinate.
