Where can I find Pet food in Heathrow?

Pet food can also be found in these cities:

Borehamwood Brentford Byfleet Epsom Feltham Greenford London Ruislip Slough Walton-on-Thames Watford West Drayton Woking invalidcity

You can also find this in Heathrow:

Wood Shavings Chews Straw Bowls Cages Cat Litter Cat Flaps Hay Bedding Bowls