Best Cat Food for Indoor Cats UK
Indoor cats have different nutritional needs — they burn fewer calories, groom more (leading to hairballs), and can get bored with food faster than outdoor cats. The UK pet food market has several indoor-specific formulas that address weight management, digestive health and coat condition. Choosing the right one depends on your cat's age, preferences and any sensitivities.
What to Look For
- 1Indoor-specific formulas have 10–15% fewer calories to prevent weight gain from a less active lifestyle
- 2Look for added fibre (beet pulp, psyllium) which helps move swallowed hair through the digestive system and reduces hairball vomiting
- 3High protein content (35%+ in dry food) helps maintain muscle mass even with less exercise — check the label lists meat as the first ingredient
- 4Mix wet and dry food to boost hydration — indoor cats often drink less water than outdoor cats, which can stress kidneys long-term
- 5Avoid foods with artificial colours and flavours — UK-made brands like Lily's Kitchen and Scrumbles meet stricter EU-origin ingredient standards
Our Top Picks
Royal Canin Indoor 27 Dry Cat Food
Pros
- Specifically formulated for indoor cats with reduced calorie content
- Highly digestible proteins reduce stool odour — helpful for indoor litter trays
- Added fibre blend helps reduce hairball formation
- Widely available at UK vets, Pets at Home and Amazon
Cons
- Contains maize and wheat — not ideal for grain-sensitive cats
- Premium price compared to supermarket brands
The vet-recommended benchmark for indoor cats — proven formula with targeted hairball and weight management.
Purina Pro Plan Housecat Adult Chicken Dry Cat Food
Pros
- Rich in chicken (21%) — named meat source, not derivatives
- Contains natural prebiotic fibre for healthy digestion
- Omega-6 fatty acids support coat health
- More affordable than Royal Canin at similar quality
Cons
- Contains wheat gluten — unsuitable for grain-free diets
- Kibble size is quite small — some cats eat too fast
Strong all-round indoor formula with added turkey for palatability and prebiotic fibre for digestion.
Lily's Kitchen Everyday Favourites Multipack Wet Cat Food
Pros
- 65% freshly prepared meat — no derivatives or fillers
- Grain-free and hypoallergenic recipe
- Variety multipack prevents meal boredom
- B-Corp certified with recyclable trays
Cons
- Expensive compared to dry food on a per-calorie basis
- Needs refrigerating once opened — use within 48 hours
British-made grain-free wet food with named meat sources — ideal for cats who prefer wet over dry.
Scrumbles Indoor Dry Cat Food Chicken
Pros
- Added gut-friendly probiotics (Lactobacillus) in every kibble
- 77% chicken content — one of the highest on the market
- No added sugar, salt or artificial anything
- British-made with recyclable packaging
Cons
- Smaller brand — not stocked in all supermarkets yet
- Only one flavour option (chicken)
UK-made gut-friendly formula with added probiotics — the cleanest ingredient list in this roundup.
IAMS Vitality Indoor Adult Cat Food Chicken
Pros
- L-carnitine added to help burn fat in less active cats
- Tailored fibre blend for hairball reduction
- Chicken is the first ingredient
- Available at every major UK supermarket
Cons
- Contains maize and wheat — not grain-free
- Less premium ingredient sourcing than Scrumbles or Lily's Kitchen
Reliable supermarket option with L-carnitine for fat metabolism — does the job without breaking the bank.
Editor's Note
Royal Canin Indoor 27 has been the vet-recommended default in the UK for years, but newer British brands like Scrumbles and Lily's Kitchen now offer comparable nutrition with cleaner ingredient lists. Subscribe-and-save on Amazon typically knocks 5–15% off cat food — worth setting up since you'll reorder monthly anyway. If switching food, transition gradually over 7–10 days to avoid digestive upset.