Help! Need names of pet food superstores!

[NotQuiteCockney]

We're all going away for a week, and a neighbour will be minding the cats. Unfortunately, I've just realised we're pretty much out of cat food. We're driving out to Oxfordshire tomorrow, so I want to find pet food superstores (that would be open on a Sunday?) en route.

I know I've seen them before, what are some company names?

Pets at Home

Yes, that's who I wanted ... looks like they have a shop that will do fine. Thanks!

why dont you get the cat food at the supermarket-its much cheaper

Well, we only do Iams, and supermarkets only have that in tiny bags, which I'm pretty sure are more expensive, per weight.

And anyway, the cats need to move to fat-cat food, which I don't think supermarkets do.