Food is one of the larger household expenditure categories: in ONS Family Spending for FYE 2023 it was 11% of spending, behind housing, fuel and power (19%), transport (14%) and recreation and culture (12%). Unlike a fixed mortgage payment, your food bill is one of the most controllable costs in your budget. The right combination of supermarket choice, loyalty schemes, cashback, and shopping habits can reduce your food spend.
This hub covers the UK supermarket savings landscape in 2026: which supermarkets are cheapest, which loyalty schemes are genuinely worthwhile, how cashback works, and the habits that reliably cut food bills.
The UK Supermarket Landscape in 2026
The UK’s main supermarkets fall broadly into three tiers:
| Tier | Supermarkets | Positioning |
|---|---|---|
| Discount | Aldi, Lidl | Cheapest in Which?’s September basket of 93 items |
| Big 4 | Tesco, Sainsbury’s, Asda, Morrisons | Mid-market; loyalty prices close the gap |
| Premium | Marks & Spencer, Waitrose | Waitrose was the most expensive in Which?’s September basket (£223.38 against £159.48 at Aldi) |
| Online-first | Ocado | Premium range; competitive on branded goods |
Loyalty Schemes — Which Are Worth Your Time
| Scheme | How to earn | Best use of points |
|---|---|---|
| Tesco Clubcard | 1 point per £1 spent | Spend in Tesco at 1p a point, or exchange with Reward Partners for up to 2x value |
| Sainsbury’s Nectar | 1 point per £1 spent | Spend points at 0.5p each (500 points = £2.50); unlock personalised Your Nectar Prices in the app |
| Boots Advantage Card | 3 points per £1 | Spend at Boots at 1p per point |
| Co-op Membership | No points; member prices on some items in store and online | Lower member prices and personalised deals |
| M&S Sparks | No points; personalised offers earn money into a digital Sparks wallet | Spend the wallet money at M&S |
In Which?’s September 2026 comparison, spending £100 earned £1 at Tesco Clubcard and at least 50p at Nectar. Both also offer member prices on selected products. Boots Advantage earns 3 points per £1, three times the Tesco rate, but its points are for Boots purchases.
Own-Brand vs Branded Food — The Real Difference
Own-brand products usually cost less than branded equivalents. In Which?’s blind taste tests, six of the eight groceries tested showed that swapping to supermarket own-brands could save shoppers hundreds of pounds a year without a drop in taste.
| Category | Swap |
|---|---|
| Breakfast cereal | Branded → supermarket own brand |
| Pasta | Branded → own brand |
| Tinned tomatoes | Branded → own brand |
| Pain relief (paracetamol) | Branded → generic equivalent |
| Bread | Premium → standard |
The biggest wins from switching to own-brand are typically in: painkillers and basic medications, store cupboard staples (tinned goods, pasta, rice), cleaning products, and condiments. Fresh produce and dairy typically show less quality difference between tiers.
How Cashback Sites Work
The two main UK cashback sites are TopCashback and Quidco. Both are free to join at a basic level.
How it works:
- Find the retailer on the cashback site
- Click through to the retailer from the cashback site (this places a tracking cookie)
- Complete your purchase as normal
- The retailer pays the cashback site a commission; the site passes most of it to you
- Once the retailer has confirmed the purchase and paid the commission, the cashback becomes payable. Quidco says retailer approval can take anywhere from a few days to a few months
Where cashback is highest: switching products such as broadband and financial products usually pay a fixed amount rather than a percentage, while retail and travel sites pay a percentage of what you spend. Check the current rate on the cashback site before you buy.
For food shopping: Check whether your supermarket is listed on a cashback site and what rate it pays. Some cashback credit cards pay cashback on supermarket spending, with rates that vary by card.
Worked Example: Comparing Two Shops
Scenario: Using Which?’s September basket of 93 items, the same list cost £193.45 at Tesco without a Clubcard, £187.71 with Clubcard Prices, and £159.48 at Aldi. The gaps are £5.74 (Clubcard Prices) and £33.97 (Aldi), or about 3.0% and 17.6% of the Tesco price (computed). A household’s own saving depends on what it buys, so these are a comparison of one list, not a forecast.
What This Cluster Covers
| Your question | Best starting point |
|---|---|
| Which supermarket is cheapest? | Cheapest Supermarket UK 2026 |
| Average UK grocery bill | Average Grocery Bill UK |
| How to reduce your weekly food shop | How to Reduce Your Weekly Food Shop |
| How to save money on food shopping | How to Save Money on Food Shopping |
| Best supermarket loyalty schemes | Best Supermarket Loyalty Schemes UK |
| Is Tesco Clubcard worth it? | Is Clubcard Prices Worth It? |
| Tesco Clubcard guide | Tesco Clubcard Guide |
| Sainsbury’s Nectar card guide | Nectar Card Guide |
| Boots Advantage Card guide | Boots Advantage Card Guide |
| Loyalty points explained | Loyalty Points Guide |
| Cashback loyalty explained | Cashback and Loyalty Guide |
| How do cashback sites work? | How Cashback Sites Work |
| Quidco vs TopCashback | Quidco vs TopCashback |
| Own brand vs branded food | Own Brand vs Branded Food |
| Meal planning to save money | Meal Planning to Save Money |
| How to budget your food | Food Budget Guide |
| Yellow sticker shopping | Yellow Sticker Shopping Guide |
Related Hubs
- Budgeting hub — overall household budget and spending tracking
- Cost of Living hub — broader cost of living pressures in 2026
- Family Costs hub — total cost of raising children in the UK