How to Cut Your Grocery Bill UK: 15 Ways That Really Work

Last updated: October 2026 · Prices, offers and loyalty schemes change often, so check your own supermarket before you shop.

If you want to cut your grocery bill, you’re not alone. Food is one of the biggest costs in most UK homes, and it’s one of the few big bills you can change this week, without switching anything or waiting for a contract to end.

The good news? You don’t have to live on beans on toast. Most of the savings come from a handful of small habits: knowing where to shop, using the loyalty prices you’re entitled to, swapping a few brands, and wasting less of what you buy.

In this guide I’ll walk you through 15 ways to cut your grocery bill in the UK that really work, including the ones that made the biggest difference in my own house.

Step 1: Know what you spend now

You can’t cut a bill you haven’t measured. For the next two weeks, keep every receipt (or check your banking app) and add up what you spend on food, including top-up shops and takeaways.

Then set a realistic weekly budget a little below that. Not a dramatic one. A target you can hit feels good, and you can lower it as the habits stick. My 50/30/20 calculator shows how food fits into your whole budget.

Where you shop

1. Use more than one supermarket (if it’s easy)

You don’t have to do one big shop in one place. I use Lidl, Morrisons and Tesco, and buy different things in each. Discounters like Aldi and Lidl are often cheaper for basics, while the bigger supermarkets can win on loyalty prices and offers. Only do this if the shops are on your way. Driving across town for a 50p saving costs more in fuel than you save.

2. Never shop without the loyalty card

This is my number one rule: if you shop without the card, you’ll pay more than you need to. At Tesco (Clubcard), Morrisons (More Card), Sainsbury’s (Nectar) and others, lots of products have a member price that you only get if you scan the card or app. Without it, you pay the higher price for exactly the same thing.

And those loyalty prices are real savings. When the Competition and Markets Authority checked more than 50,000 loyalty-price products, it found that 92% were genuine savings against the usual price, typically 17% to 25% cheaper. It also found that another supermarket can still be cheaper, so a loyalty price is a good deal, not always the best one.

3. Check your app for personal offers

Many loyalty apps now give you personalised offers each week, based on what you buy. Some have to be “unlocked” in the app before they work. It takes two minutes before you shop.

Lidl is a good example. In my Lidl Plus app I usually get 7 or 8 coupons picked for what I buy, often 10% or 15% off, and sometimes £5 off when I spend £50. If you skip the app, you’re paying more than you need to. Coupons change each week and depend on your account, so check yours before you shop.

4. Compare the final basket, not the badge

Comparison sites and Which? regularly compare supermarket prices. If you’re not sure where to shop, a quick check every few months tells you whether your usual supermarket is still good value for what you buy.

What you buy

5. Try the downshift challenge

This is how I cut our bill by 30%. Pick a few things you buy every week and try one level cheaper: from premium to standard, from a big brand to own-brand, or from own-brand to the value range. If you like it, keep the swap. If you don’t, go back. No rules, no guilt.

Start with the easy ones: tinned tomatoes, pasta, rice, flour, frozen veg, cleaning products and toilet roll. Most people can’t tell the difference.

6. Look at the unit price

The small print on the shelf label shows the price per kg, per litre or per 100g. That’s the only fair way to compare a big pack with a small one, or a multipack with singles. Bigger isn’t always cheaper.

7. Buy loose fruit and veg

Loose produce lets you buy exactly what you need, and it’s often cheaper per kg. WRAP, the food waste charity, also says buying loose helps households waste less.

8. Go frozen

Frozen fruit, veg and fish are often cheaper than fresh, last for months and are just as handy. Frozen peas, spinach and berries are staples in a lot of thrifty kitchens.

Bargains and markdowns

9. Grab the Lidl Too Good To Waste box

Lidl sells boxes of fruit and veg that’s still good to eat but not quite perfect, for a fraction of the normal price. When I first bought one it was £1.50 for around 5kg; it’s about £2 now. Contents change every time, so it works best if you’re happy to cook with whatever’s inside. Ask at your local store when they usually put them out.

10. Learn your store’s yellow-sticker times

Reduced items, often with yellow or orange stickers, appear when food is close to its date. There’s no national time, and every store is different. Notice the pattern in your local shop, or politely ask a member of staff. Only buy what you’ll eat or freeze before the date.

11. Try a food rescue app

Apps like Too Good To Go and Olio let you collect surplus food from shops, cafés and neighbours for very little, or for free. What you get varies, so it’s best for people who enjoy a bit of a surprise.

Wasting less at home

12. Plan your meals before you shop

Meal planning is the habit that ties everything together. Spend 10 minutes each week:

1. Check what’s already in your fridge, freezer and cupboards.
2. Plan meals that use those first.
3. Write a list of only what’s missing.
4. Stick to the list in the shop.

Plan one or two “use it up” meals each week, like a stir-fry, soup, frittata or pasta bake, for odds and ends.

13. Stop throwing food away

WRAP says an average household of four throws away around £1,000 of good food every year. Potatoes, bread and leftovers are useful places to start reducing waste. A few easy fixes:

• Freeze bread and toast it straight from frozen.
• Store potatoes somewhere cool and dark, away from onions.
• Cook once, eat twice. Batch cook and freeze portions.
• Know your dates: “use by” is about safety, “best before” is about quality.

14. Cut the top-up shops

The quick “just popping in for milk” shop is where budgets go wrong, because you rarely leave with just milk. Buy long-life or frozen milk and bread as a backup, and you’ll make far fewer extra trips.

15. Add cashback last

Once you’ve decided what to buy, a final layer of savings is cashback. Some cashback sites sell supermarket gift cards with a small reward, which you then spend on your normal shop. Here’s how supermarket cashback gift cards work. Only do it for money you’d spend anyway.

Help if money is really tight

• Healthy Start: if you’re more than 10 weeks pregnant or have a child under 4, and claim certain benefits, you may get help to buy milk, fruit and veg. In Scotland, the equivalent is Best Start Foods.
• Free school meals: check with your council whether your children qualify.
• Local support: community pantries and food banks are there for anyone who needs them, no shame at all. Your council or Citizens Advice can point you to local help.

Grocery mistakes that cost you money

1. Shopping hungry, which leads to more snacks in the trolley.
2. Forgetting the loyalty card and paying full price.
3. Buying multi-buys you won’t use before the date.
4. Ignoring the unit price.
5. No list, so you buy things you already have.
6. Lots of small top-up shops instead of one planned one.

How to cut your grocery bill UK: FAQs

How much should a family spend on food a week in the UK?

It depends on your family size, diet and where you live. The best way to find your number is to track two weeks of spending, then set a target a little lower and adjust as you go.

Is Lidl or Aldi always the cheapest?

They’re often among the cheapest for a basic basket, but not for everything, and loyalty prices at other supermarkets can sometimes beat them. Compare the items you actually buy.

Are supermarket loyalty prices real savings?

Mostly, yes. The CMA found 92% of the loyalty prices it checked were genuine savings, typically 17% to 25% off the usual price.

What is the Lidl Too Good To Waste box?

It’s a box of fruit and veg that’s still good to eat but not perfect, sold cheaply to cut food waste. In my experience it’s about 5kg for around £2 now. Availability varies by store.

What’s the quickest way to cut my food bill?

Use the loyalty card every time, plan your meals around what you already have, and try own-brand versions of five things you buy every week.

How to cut your grocery bill: summary

• Track your food spending for two weeks, then set a realistic target.
• Never shop without your loyalty card or app.
• Downshift a few brands and check the unit price.
• Grab bargains: Lidl’s veg box, yellow stickers and food rescue apps.
• Plan meals, waste less and cut top-up shops.

Which of these are you going to try this week? Tell me in the comments, I’d love to hear what works for you.

Sources

• CMA: Groceries loyalty prices offer genuine savings (November 2024)
• WRAP: Food waste in UK homes
• GOV.UK: Healthy Start (checked 9 October 2026)