There is no single “best” supermarket credit card for every UK shopper. The useful decision is usually narrower: whether a card rewards the supermarket where you actually pay, whether its transaction classification or acceptance rules will apply, whether its annual fee is covered by the expected reward, and whether you will repay the statement balance in full. This page therefore uses an evidence-led decision framework, not a universal ranking.
For a regular Waitrose shopper who values vouchers at their face value, the John Lewis Partnership Credit Card has a specific standard earn rate at Waitrose. For a shopper using a broad range of qualifying supermarkets, the NatWest Reward Credit Card has a defined supermarket rate based on merchant category codes. American Express cashback cards use general purchase cashback rather than a supermarket category, so acceptance at the intended store and the warehouse-retailer exception matter. None of those observations makes a card right for someone who will carry a balance: interest can outweigh a year’s grocery rewards quickly.1 4 7 11 14 All product terms and calculations in this article were checked on 20 October 2026.
Financial-information boundary: This is general UK information, not personal financial, debt, tax or legal advice. It does not assess affordability, creditworthiness, acceptance likelihood or the suitability of any card for an individual. Card applications are subject to lender underwriting and terms can change.
Start with this five-question decision framework
- Will you clear the full statement balance, on time, every month? If not, stop treating rewards as a saving. MoneyHelper says that, outside a promotional period, paying less than the full amount means interest on the outstanding balance; it also warns that credit-card interest is typically expensive.14 A rewards card is not a reason to borrow for food shopping.
- Where is the grocery spend actually processed? A supermarket brand on the sign is not always enough. NatWest bases its offer on merchant category codes, while the John Lewis programme distinguishes Waitrose locations from, for example, Waitrose at Shell petrol stations. Amex acceptance can differ by location.2 10 12
- What form of reward will you use? Cashback credited to a card account, NatWest Rewards and John Lewis/Waitrose vouchers are not identical. Do not assume every point or reward can be spent like cash.
- What annual spend and fee are involved? Calculate the standard reward on eligible spending, deduct the card’s annual fee and then test all thresholds and caps. Do not count a time-limited welcome offer as an ongoing rate.
- Could the store, payment route or purchase be excluded? Online intermediaries, petrol-station variants, cash-like transactions and warehouse retailers can change the result. Check the transaction rule before switching a large recurring spend.
Comparison universe and method
This is not a market-wide ranking. The comparison universe is four publicly available UK personal cards selected because their official pages, terms or summary boxes disclosed the material ingredients needed for a narrow supermarket-spending analysis on the verification date: standard rewards, applicable purchase classification or retailer definition, annual fee and representative APR. The cards are the NatWest Reward Credit Card, Amex Cashback Everyday Credit Card, Amex Cashback Credit Card and John Lewis Partnership Credit Card.1 4 7 11
The universe excludes cards where the relevant ongoing supermarket earn rate, retailer restriction, fee or programme treatment could not be confirmed from an official source during this review. It also excludes introductory incentives from the ongoing comparison. This means the article does not claim that these are the only viable UK cards, the highest-paying cards, or the best choices for every reader.
The reproducible ongoing-value calculation is:
Illustrative annual reward value = eligible supermarket spend × applicable standard earn rate − annual card fee.
For tiered Amex cards, the rate depends on total card spending in the membership year, not merely supermarket spending. For the John Lewis card, the calculation values points at the published conversion of £1 of vouchers per 100 points and assumes the voucher is useful to the reader. The calculation excludes interest, missed-payment charges, foreign-use fees, welcome bonuses, account fees outside the card agreement and retailer loyalty schemes. It is an illustration of terms, not a forecast of what a reader will receive.
| Card and supermarket route | Standard reward relevant to grocery spend, checked 20 October 2026 | Ongoing annual card fee and representative APR, checked 20 October 2026 | Key rule that can change the result |
|---|---|---|---|
| NatWest Reward Credit Card | 1% in Rewards on supermarket purchases; 0.25% at supermarket petrol stations and elsewhere.1 2 | £24 annual fee, refunded for holders of a Reward current account; 31.0% APR variable representative. The card summary says actual APR can be 31.0% or 35.2% depending on circumstances.1 3 | NatWest identifies qualifying supermarkets through MCC 5411 or 5499; petrol-station treatment is lower.2 |
| Amex Cashback Everyday Credit Card | 0.5% on purchases up to £10,000 in a membership year, then 1% above that; UK warehouse retailers earn 0.5%. A minimum £3,000 of purchases in the membership year is required to earn cashback.4 5 | No cardmembership fee; 29.1% APR variable representative.4 6 | The rate is a general-purchase rate, not a supermarket-specific rate. Individual locations may not accept Amex.5 10 |
| Amex Cashback Credit Card | 0.75% on purchases up to £10,000 in the prior 12 months, then 1.25% above; UK warehouse retailers earn 0.5%.7 8 | £25 annual cardmembership fee; 34.6% APR variable representative.7 9 | The fee needs to be deducted and the tier depends on overall card spend; acceptance and warehouse treatment still apply.8 10 |
| John Lewis Partnership Credit Card | At eligible Waitrose spend, 5 points per £4 after the new-customer double-points period; 100 points redeem for £1 of vouchers. That equates to 1.25% of spend when vouchers are valued at face value.11 12 | No annual fee; 29.9% APR variable representative. The summary box says rates can be 29.9%–45.9% APR depending on individual circumstances.11 13 | The reward is retailer-specific and vouchers are for John Lewis/Waitrose rather than cash. Waitrose at Shell is non-Partnership spend.12 |
How the numbers work: a transparent £4,800 example
Assume £4,800 of standard eligible supermarket spending over a year, no introductory offer, no interest, and payment in full each month. Assume that this is the cardholder’s only spending on the Amex card, so it remains in the below-£10,000 tier. The exercise compares programme mechanics, not card quality.
| Illustrative scenario | Calculation | Indicative ongoing reward after annual card fee |
|---|---|---|
| NatWest qualifying supermarket purchases | £4,800 × 1% − £24 | £24 in Rewards |
| Amex Cashback Everyday eligible purchases, provided £3,000 card-year condition is met | £4,800 × 0.5% − £0 | £24 cashback |
| Amex Cashback eligible purchases below its £10,000 tier | £4,800 × 0.75% − £25 | £11 cashback |
| Standard eligible Waitrose spend on John Lewis Partnership Card | £4,800 × 1.25% − £0 | £60 in John Lewis/Waitrose vouchers |
The NatWest result assumes purchases are coded as the qualifying supermarket MCC, not supermarket petrol. It does not include the cost or eligibility conditions of any separate Reward current account that may refund the card’s £24 annual fee.2 3 The Amex Everyday result is conditional on achieving the card’s £3,000 annual purchase minimum; the paid Amex result assumes total card spending does not reach the higher tier. Cashback is paid as a credit to the Amex card account annually, rather than as withdrawable cash.5 8
The John Lewis result is only a face-value estimate for someone who will use the vouchers. Points are automatically redeemed three times a year, a minimum 500 points is needed for a £5 voucher, unredeemed points expire after two years, and vouchers cannot be exchanged directly for cash.12 A reader who rarely shops at Waitrose or John Lewis should not treat the figure as equivalent to unrestricted cash.
Card-by-card restrictions that matter more than headline rates
NatWest Reward Credit Card: broad supermarket definition, but coding and petrol matter
NatWest says qualifying supermarkets include, but are not limited to, Asda, Iceland, Marks & Spencer, Morrisons, Sainsbury’s, Aldi, Lidl, Tesco, Co-op and Waitrose. Crucially, it says it identifies supermarket purchases through MCCs 5411 and 5499. That makes the transaction classification—not a promise about a particular chain—the operative test.2 A purchase at a supermarket petrol station earns 0.25%, not the card’s 1% supermarket rate.1 2
NatWest also lists non-reward transactions, including business-purpose purchases, borrowing repayments and bill payments, certain payment-card, voucher, foreign-currency and travellers-cheque purchases, gambling transactions, its own fees and charges, and balance transfers. The list matters if a large shop contains a cash-like add-on: do not infer eligibility just because a transaction happened in a supermarket.2 The card requires applicants to be UK residents aged 18 or over with annual income of at least £10,000; credit approval and the terms actually offered remain conditional on NatWest’s assessment.1 3
Amex cashback cards: general purchase cashback is not guaranteed supermarket acceptance
The two Amex cashback products do not publish a special supermarket multiplier in the sources reviewed. Their stated cashback applies to purchases, with a lower 0.5% rate for UK warehouse retailers. Both sets of programme terms exclude interest, fees, balance transfers, cash advances including transactions treated as cash, prepaid-card loading and foreign-currency purchases.5 8
For the no-fee Everyday card, cashback is conditional on at least £3,000 of purchases in the relevant membership year; the rate is 0.5% up to £10,000 and 1% beyond it. Its public eligibility checklist includes age 18+, a permanent UK home address, a UK bank or building-society account, no history of bad debt and income of at least £15,000, but Amex also states approval is subject to status and its credit assessment.4 5
For the £25-a-year Amex Cashback Credit Card, the standard rate begins at 0.75% and rises to 1.25% above the stated spending tier. Its public checklist says £20,000 minimum annual income and gives comparable age, address, bank-account and credit-history conditions; it is likewise not an approval guarantee.7 8 Amex lists a number of UK supermarket brands on its acceptance page, while expressly warning that certain locations across the UK may not accept the card. Check the payment option at the exact shop or delivery route before making a card choice primarily for groceries.10
John Lewis Partnership Credit Card: highest standard figure here is tied to a closed voucher ecosystem
The standard post-introductory Waitrose rate is five points for every £4 on eligible Partnership spend. Points convert at £1 of vouchers per 100 points, producing the 1.25% face-value calculation. Standard non-Partnership spending earns only one point per £10, so this card’s strength is concentrated on eligible John Lewis/Waitrose transactions, rather than on a general supermarket basket.11 12
The terms define Partnership spend to include Waitrose stores, Waitrose.com, Waitrose Welcome Breaks, Waitrose Cellar and Waitrose Delivery Pass. They classify Waitrose at Shell petrol stations as non-Partnership spend. They also classify purchases at John Lewis and Waitrose concessions, and transactions made using a payment service later debited to the card, such as PayPal and Curve transactions at those stores, as non-Partnership spend.12 Balance transfers, cash advances, cash-related payments, interest and charges do not earn points.12
New customers may see a temporary double-points period and a separate voucher promotion, but neither is included in the ongoing comparison because each has terms, timing and eligibility conditions. The public application page says new applicants must be 18+, UK resident, have 12 months of UK address history, a UK mobile number and email address, and must not have held a Partnership Credit Card in the previous 12 months; credit is subject to status.11
Fees, APRs and the borrowing boundary
An annual fee is not the only cost, but it is the recurring cost most directly relevant to a supermarket-rewards calculation. The products in this comparison also publish cash, foreign-usage, transfer or default charges in their summary documents. Those charges are deliberately not folded into a grocery-reward estimate because they depend on behaviour that should not be assumed.3 6 9 13
Representative APR is a comparison disclosure, not a personal quote. MoneyHelper explains that only 51% of people approved need receive the advertised rate or better; another applicant may be charged more. NatWest’s own summary box also says the actual limit and APR depend on its credit assessment.3 15 Treat the stated APRs in the table as required cost context, not as a reason to choose a rewards card for revolving debt.
A safer operational rule is simple: set a Direct Debit to clear the full statement balance if affordable, avoid cash withdrawals, and do not use rewards to justify spending more. MoneyHelper notes that a credit limit depends on factors including credit history and income, and that late or insufficient payments can damage a credit file.14
Methodology, evidence limitations and maintenance
Aurex Intelligence Research Desk reviewed issuer, lender or programme terms, summary boxes and public guidance directly on 20 October 2026. The desk did not test cards, apply for credit, audit live merchant terminals, model individual credit decisions or value a reader’s personal use of vouchers. Every programme can change its earn rates, merchant coding, exclusions, fees, acceptance footprint or eligibility requirements. A store’s acceptance of a payment method and its merchant category can also vary by branch, online checkout or payment intermediary.
The main limitation is intentional: this is a source-checked, four-card framework, not a census of every UK reward card. It does not value welcome offers, retailer loyalty points, card-linked offers, insurance, credit-building outcomes, foreign-use value or Section 75 eligibility. Those subjects require different facts and conditions. If a product term cannot be confirmed on an official source, it is not used here.