What Marks & Spencer Gets Right About Customer Loyalty

Most loyalty programmes are confession booths for marketing departments: a points balance nobody checks, an email nobody opens, a tier system nobody understands. Marks & Spencer's Sparks scheme is the rare exception that shoppers actually use — not because the rewards are bigger, but because the retailer solved a problem most loyalty teams never even name.

Marks & Spencer gets loyalty right by treating Sparks as an identity mechanism, not a discount mechanism. Launched in November 2015 as a free, digital-first membership scheme, Sparks ties personalised offers and charitable giving to everyday purchases rather than burying value in a points ledger customers must manage themselves. The design choice that matters most isn't the reward — it's the removal of friction between "I shopped" and "I feel recognised."

What is M&S Sparks and why does it matter to loyalty strategy?

Sparks replaced the idea of loyalty-as-transaction with loyalty-as-relationship. Since its launch in November 2015, M&S has positioned the scheme as free to join and digital-first — accessed primarily through the M&S app or online account rather than a plastic card that sits dead in a wallet. That single structural decision — digital by default — is the quiet engine behind everything else the programme does well.

It matters beyond M&S because it is a live counter-example to the dominant loyalty template: accumulate points, redeem for discounts, repeat. That template has been the default in UK and global retail for decades, and it is precisely why most loyalty schemes plateau. Sparks took a different starting assumption — that the reward customers actually want is to feel known, not just compensated.

Why do most loyalty programmes fail to build real loyalty?

Most loyalty programmes fail because they optimise for enrolment, not engagement. A customer signs up at the till for a one-off discount, downloads an app they never open again, and the brand counts them as a "loyal member" in a quarterly deck. The scheme produces a database, not a relationship.

Three structural flaws recur across the category:

• Reward opacity. Customers cannot easily calculate what their points are worth, so the promised value feels abstract rather than real — undermining the very reciprocity the programme is meant to trigger.
• Generic targeting. Offers go to everyone regardless of purchase history, so the programme reads as mass marketing with a loyalty label stapled on.
• Reward-only framing. The entire value exchange is transactional — spend, earn, redeem — with no emotional or values-based hook that would survive a competitor's better discount.

Behavioural economics has a name for the underlying design failure: these programmes rely on sludge — the term Richard Thaler uses for friction that works against the customer's interest, as opposed to the kind of smart friction that genuinely protects them. Every extra step between "I am a member" and "I feel the benefit" bleeds enrolment into dormancy.

What does M&S actually get right with Sparks?

Three design decisions separate Sparks from the generic loyalty template, and each one maps to a well-documented behavioural principle rather than a marketing trend.

It removes the friction of "earning" a reward

Because Sparks is digital-first by design, the member doesn't have to remember a card, calculate a points balance, or manually redeem anything at checkout. The reward surfaces on its own. This matters more than it sounds: friction is the single biggest predictor of whether a loyalty mechanism gets used at all, regardless of how generous the underlying offer is. A scheme that requires effort to benefit from is a scheme most customers will quietly abandon.

It personalises the offer, not just the greeting

Sparks ties rewards to a member's actual shopping history rather than issuing blanket discounts. This is choice architecture in practice — the structuring of options so the "default" experience is already relevant to the individual, which is the central idea Richard Thaler and Cass Sunstein popularised in their 2008 book Nudge, work that contributed to Thaler's 2017 Nobel Memorial Prize in Economic Sciences. A personalised offer doesn't just convert better; it signals recognition, which is the emotional currency loyalty programmes are actually meant to trade in.

It gives the relationship a reason beyond the discount

Sparks lets members direct part of the value created through their shopping toward causes they care about — folding charitable giving into the mechanics of everyday purchases rather than treating loyalty purely as a savings scheme. This is reciprocity at work, the principle the psychologist Robert Cialdini documented in his 1984 book Influence: people feel an obligation to return a favour, and a brand that visibly contributes to something a customer values creates a different, stickier kind of debt than a 10% discount ever could. It reframes the relationship from "M&S saves me money" to "M&S and I do something together" — a much harder bond for a competitor to undercut on price.

A discount is forgotten the moment a cheaper one appears elsewhere. A brand that makes you feel recognised, or lets you do some good while you shop, is not competing on price at all — it has quietly left that game.

How does the peak-end rule explain why Sparks moments stick?

Daniel Kahneman's peak-end rule — the finding that people judge an experience largely by its most intense moment and how it concludes, rather than by its average — explains why the specific moments a loyalty scheme chooses to spotlight matter more than its baseline mechanics. Kahneman's work on judgment under uncertainty, recognised in the 2002 Nobel Memorial Prize in Economic Sciences shared with Vernon Smith, is the foundation for this idea, later popularised in his book Thinking, Fast and Slow.

Applied to a loyalty programme, the lesson is blunt: a scheme that delivers a flat, forgettable 5% off every transaction will be remembered less fondly than one that delivers occasional, well-timed moments of genuine delight — a birthday gesture, a relevant personalised offer that lands exactly when needed, a visible charitable contribution tied to a specific purchase. The average discount rate across the year is almost irrelevant to how the relationship feels in retrospect. What gets remembered is the peak, and the end.

What can other brands copy from the Sparks model?

The mechanics are M&S-specific, but the design logic is portable. Any brand rebuilding a loyalty scheme should work through the same sequence of decisions:

1. Default the member into the benefit. Don't make customers remember a card, calculate a balance, or claim a reward manually — the fewer actions between membership and benefit, the higher the sustained engagement.
2. Personalise against real purchase data, not segments. A loyalty offer that feels mass-produced reads as marketing, not recognition — and recognition is the actual product being sold.
3. Give the relationship a second currency beyond price. Whether it's charitable giving, community access, or early product input, build a reason to stay that a competitor's discount cannot simply match.
4. Design for peak moments, not just baseline value. Identify the two or three points in the customer lifecycle — a birthday, an anniversary, a first purchase — where a disproportionate gesture will outweigh its cost in memory.
5. Measure dormancy, not just enrolment. The number of people who joined is a vanity metric; the number who used the benefit in the last 90 days is the only honest health check on the programme.

Where could a programme like this still fall short?

No loyalty mechanism is immune to the pressures that erode this category over time. Personalisation built on purchase history can tip into something that feels surveilled rather than recognised if the offers become too specific or too frequent — the same data that builds trust can just as easily breach it. Charitable tie-ins work only as long as they are genuinely funded and clearly explained; a goodwill mechanic that feels performative does more reputational damage than no mechanic at all. And a free, open scheme risks commoditising its own membership if everyone is in it and the personalisation engine behind it doesn't keep sharpening — scale without continued precision is how loyalty programmes quietly calcify into the generic template they were built to escape.

The honest counterargument is that Sparks' advantage is inseparable from M&S's own brand equity — a retailer with decades of trust has more room to make an emotional appeal than a challenger brand still earning basic credibility. That's a fair caveat. But the underlying mechanics — low friction, real personalisation, a second currency beyond discount, designed peak moments — don't require heritage to work. They require discipline in the customer experience strategy behind the scheme, not a seventy-year head start.

What should CX leaders take from this?

The teams that still measure loyalty success by sign-up volume are measuring the wrong end of the funnel. Dormant members are not an asset; they are a liability dressed up as a KPI. The real test of a loyalty programme is whether a member, mid-purchase, can feel the difference between being a customer and being this specific brand's customer. Sparks passes that test often enough to be worth studying — not for its points structure, but for its insistence that the value exchange is emotional before it is financial.

Brands rebuilding their own loyalty architecture would do well to start where M&S did: not with the reward catalogue, but with the question of what a member should feel thirty seconds after a purchase. That is the brief. The points come later, if they're needed at all.

Renascence works with retailers and consumer brands to redesign loyalty mechanics around behavioural principles rather than point inflation — explore our customer loyalty strategy work, or see how the same reciprocity-led thinking plays out in a different retail category in What H&M Gets Right About Customer Loyalty Design and Why Community Beats Discounts as a Loyalty Strategy. For teams mapping where their own loyalty journey leaks engagement, our CX journey mapping work is the natural starting point.