One thing I've noticed is that there must be a difference in what's legally required as far as disclosing pet food ingredients. In the US, if I want to know the ingredients for a brand, I just look it up online. But I've been looking for UK brands & a lot of them don't list the ingredients (or not all of them), which is really distressing to me, as I don't like feeding my cats crap, & also, lots of cats (including mine) have food sensitivities/allergies.
I also feel like there isn't as much of a range of quality, grain-free WET food (I don't feed dry food) as there is in the US, sigh.
I order a lot of cat food from PetFoodDirect.com--they have the better quality brands that I like--but I haven't been able to locate a similar-type website for the UK that has a wide range of healthier/organic/etc. brands. Anyone find one?
Oh, & re: litter--I don't like clay litter, because it's strip-mined (@ least in the US it is) & there are potential inhalation issues. I'm glad that the UK sells World's Best Cat Litter (it's made from corn)--it's one of the brands here that I like.