The Digital Markets Competition and Consumer Act Guide

A shopper lands on your site, adds a box of packing materials or a moving kit to the basket, then stops at checkout because a delivery fee appears late. Another customer scrolls through your reviews, spots a string of suspicious five-star ratings, and wonders whether they're real. A third one clicks into a subscription-style service, then struggles to see how to cancel. Those everyday moments are exactly where the Digital Markets Competition and Consumer Act now bites for many UK businesses.

The law is often introduced as a Big Tech reform, and that part matters. But for most UK sellers, movers, storage operators, and shipping-heavy businesses, the more immediate change sits in consumer enforcement, especially around drip pricing, fake reviews, and subscription traps. That's where the practical risk lives, because the rules now reach the checkout page, the review section, and the cancellation journey.

A New Compliance Landscape for UK Sellers

A small online retailer can feel this change before it ever hears the phrase Strategic Market Status. One day the team is updating product pages and delivery options, and the next it's asking whether a late-added admin charge, a review widget, or an auto-renewal notice could attract regulatory attention. The law now reaches much further into ordinary trading habits than many businesses expected.

The safest way to read the Digital Markets Competition and Consumer Act is as two laws in one. One part targets the largest digital firms and their market power. The other part changes how every trader sells to UK consumers, especially online where pricing, reviews, and cancellation rules are now much more tightly policed.

The ordinary seller is now part of the story

If you run an e-commerce store, a removals business, or a self-storage operation, the Act matters even if you've never had a meeting about platform regulation. Your real exposure is more likely to come from how you present a delivery charge, how you moderate reviews, or how clearly you explain a renewal. The legislation treats those as compliance issues, not just website design choices, because they can shape a consumer's decision.

Practical rule: if a customer only discovers a cost at the last step, your checkout may be creating avoidable risk.

For businesses that ship physical goods, the checkout journey matters just as much as the product page. If you're reviewing pack sizes, carriage fees, or add-on services, keep the consumer's view in mind from the first click to payment. Even practical decisions like how you present bundles or dispatch options can now have legal consequences, which is one reason many sellers also rethink presentation and fulfilment details, not just legal wording. A useful place to think about customer presentation in parallel is to delight customers with packaging, because compliance and customer experience now overlap more than they used to.

Why this law changes day-to-day compliance

The Act also changes who enforces consumer law and how fast that enforcement can happen. That means internal processes matter more than ever, because the business may not get the slow, court-based runway it used to rely on. The result is a permanent shift in how UK sellers should think about website copy, subscription notices, and review moderation.

The useful question is no longer whether the law is “about your sector”. It's whether your trading practice touches a consumer at a point where clarity, timing, and honesty now matter legally. That's the standard that runs through the rest of this guide.

What the Digital Markets Competition and Consumer Act Is

A shop owner can be fully focused on packaging, delivery slots, or subscription renewals and still run into this Act. The Digital Markets Competition and Consumer Act 2024 received Royal Assent on 24 May 2024 and gave the CMA new tools to regulate large digital firms with strategic market status and to enforce consumer protection directly legislation.gov.uk. In plain English, Parliament placed two reforms in one Act, one aimed at digital gatekeepers, the other aimed at unfair trading across the wider UK economy.

The first part is the digital markets regime. It is designed to be ex ante, which means the CMA can step in before harm becomes fixed in the market. The second part is the consumer protection regime, which updates UK consumer law for online selling, reviews, subscriptions, and pricing disclosures. For a seller moving boxes, posting parcels, or running a checkout page, the second part is often the one that changes daily routines first.

Two jobs, one statute

The Act works like a rulebook with two separate chapters. One chapter is for firms with enough strategic power to shape how others compete online. The other chapter is for any business that sells to consumers in the UK, whether it sells software, moving supplies, home storage, or parcel goods.

That split matters because the Act does not rely only on after-the-fact enforcement. It lets the CMA intervene earlier in the digital markets space, while also giving it direct consumer powers that do not require a court case first. The law is built around a simple policy choice, stop obvious harm sooner, rather than wait for a long competition case to finish after the market has already adjusted around it.

Why it was introduced

Older consumer rules were built for a world where prices and terms were easier to see on a shelf or in a paper brochure. Online, a customer may only see the full cost late in the checkout flow, and a review can be shaped before the buyer has any reason to question it. The Act updates that reality by tying legal duties to how digital trading works.

That makes it relevant well beyond Big Tech. If your checkout, subscription journey, or review display affects a consumer's decision, the Act can matter to you. The CMA now has a stronger role in testing whether those practices are fair, transparent, and easy to understand. For sellers trying to grasp where that pressure will show up first, a practical place to start is UK next day delivery explained, because delivery promises, pricing clarity, and consumer trust now sit closer together than many businesses expect.

The Digital Markets Regime and Strategic Market Status

A UK seller may read the headlines and assume the digital markets side of the Act is only for global platforms. This is narrower and more technical. It focuses on firms with more than £25 billion in global revenue from digital activities and more than £1 billion in annual UK digital revenue, which shows why this part of the regime is aimed at genuine digital scale rather than ordinary SMEs.

What Strategic Market Status changes

Once a firm is designated with Strategic Market Status, the CMA can place conduct requirements on that business and impose pro-competition interventions. In plain English, that means the regulator can require a dominant digital service to change specific behaviour where it controls a key gateway. A marketplace, app store, or search service can be told to stop using one-sided rules that shape the whole market around its own interests.

That is a different tool from a standard competition case. The point is to address market harm while the position is still forming, rather than waiting until rivals and customers have already adapted to the unfair setup.

The Act also uses a wide definition of digital activities, covering internet services and digital content, even when those services are free legislation.gov.uk PDF. That matters because the regime is not limited to paid software or subscription products. A business does not escape scrutiny just because the customer pays with attention, data, or a later purchase instead of an upfront fee.

The practical point is simple, the CMA can act earlier where a platform's power is already clear.

Penalties and merger scrutiny

The sanction framework is serious. Breaches can attract penalties of up to 10% of global turnover. That level of exposure makes this a board-level issue for any business that falls within scope, because the cost of getting it wrong is no longer a manageable line item.

The regime also reaches deals that may look small on paper but matter strategically. Sources note that the CMA can require reporting of transactions as low as 15% minority investments, and that mandatory merger reporting can apply above a £25 million transaction threshold for SMS firms Cookie Information. For large platforms, that means deal planning now needs regulatory screening much earlier in the process.

For most readers, though, the more practical lesson is narrower. If your business is not a major digital gatekeeper, this half of the Act is background noise rather than an immediate operational threat. The consumer side is where ordinary sellers usually feel the pressure first, especially if you are choosing an Amazon selling route or choosing wholesale packaging materials, because the product may be simple, but the pricing, delivery, and contract details still have to be handled carefully.

New Consumer Protection Rules That Affect Every UK Seller

A UK seller can get caught by the consumer side of the Act long before it ever thinks about platform regulation. The CMA can impose direct civil penalties of up to 10% of a business group's worldwide turnover for consumer protection breaches, without first going to court, and unavoidable fees must be shown clearly and in a timely manner before the consumer pays. For an online retailer, that changes everyday checkout design, product pages, and subscription flows, not just legal paperwork.

Fake reviews and hidden fees

The ban on fake reviews is direct. A business cannot create the appearance of independent customer confidence when the feedback is manufactured, paid for without clear disclosure, or otherwise manipulated. That affects how reviews are requested, moderated, and displayed, not only the wording in a policy page.

The same practical warning applies to drip pricing. If a consumer sees one price at the start and unavoidable charges appear later, the business may be entering prohibited territory. Delivery surcharges, service fees, and extra handling charges are common pressure points, especially when they only show up at checkout. A seller offering premium shipping should also make the cost path clear from the start, including whether a faster option is priced separately, as in UK next day delivery explained.

Subscriptions and cancellation friction

The Act also tightens subscription obligations. Businesses now need clearer subscription information, renewal reminders, and easy cancellation, which is meant to reduce hidden-cost conversion frictions and subscription trap persistence. If your model relies on rolling contracts or auto-renewal, the legal question is no longer just whether the customer clicked “agree”, but whether the journey was transparent and manageable.

A wholesale customer who signs up for recurring dispatch supplies should not have to dig through layered menus to understand the renewal point. A consumer buying a moving kit should not discover extra fees only after investing time in the checkout. Those are ordinary trading patterns, and the Act now puts them under a microscope.

Useful test: if a customer would feel surprised by a recurring charge, the contract probably needs rewriting.

The point is clarity, timing, and ease of exit. If your business sells anything with repeat billing, treat the cancellation journey as part of the product, not an afterthought.

How the UK Regime Compares to the EU Digital Markets Act

Many businesses already know the EU's digital rules, so the question is less “what is this?” and more “how is the UK version different?”. The short answer is that the UK regime is more mixed. It combines platform regulation with broad consumer enforcement, while the EU's DMA is narrower in focus on gatekeepers.

The UK approach has drawn criticism in policy debate because it does not use the same kind of gatekeeper thresholds the EU uses. At the same time, it gives the CMA stronger direct consumer powers, which is why many smaller firms may feel the UK law more sharply in day-to-day trading than the EU model. That difference is especially relevant if you sell across channels and are already thinking through choosing an Amazon selling route, because platform strategy and consumer compliance now interact more tightly.

Why the comparison matters for operators

If you trade in both jurisdictions, don't assume the same compliance playbook will work everywhere. The UK law is more likely to reach ordinary commercial practices like fees, reviews, and cancellation, while the EU model stays more centred on the conduct of large digital gatekeepers. That means your legal team may need two different checklists, one for platform dependency, one for consumer-facing presentation.

The UK's broader consumer focus also means your website copy can become more important than your corporate structure. For businesses that sell physical products, that shift can feel familiar, because packaging, delivery, and pricing all affect what the customer experiences. A good primer on UK packaging regulations explained can sit alongside your digital compliance review, because the operational mindset is similar, get the customer-facing detail right.

Implementation Timeline and Key Dates to Know

A compliance deadline is only useful if you know which rule started when. With the Digital Markets, Competition and Consumers Act, the shift happened in stages, so sellers had to watch more than one start date. Royal Assent came on 24 May 2024, the competition-digital markets regime began applying on 1 January 2025, and the consumer protection regime took effect on 6 April 2025. Further consumer-savings provisions were brought into force on 1 January 2026.

What each date means in practice

Royal Assent showed that Parliament had finished the law, but it did not mean every duty was live. The January 2025 start date brought the digital markets framework into operation for firms in scope, which matters most for the larger platform side of the regime. By April 2025, consumer-facing businesses were already in the live enforcement period for pricing, reviews, and subscriptions, the parts that affect everyday online selling.

The 2026 savings-related commencement shows that the regime is still being phased in. Businesses should treat the Act as a rolling set of obligations, not a one-time website update. If the checkout, review system, or cancellation flow has not been checked since the consumer rules came into force, the work is already overdue.

If your team has not reviewed checkout copy, review moderation, and cancellation paths since the consumer rules came into force, the work is overdue.

What businesses should already have done

By this point, a sensible business should have checked every place where a consumer first sees the price, every place where a customer can leave or read a review, and every place where a subscription renews. It should also have decided who owns those processes inside the business, because pricing, legal, customer service, and web operations now overlap. The law works best when those teams are aligned, not when each one assumes someone else has handled the risk.

For shipping-heavy businesses, the highest-risk page is often the one that looks the most ordinary. A delivery fee, a service charge, or a cancellation step can create more exposure than a polished homepage banner. That is why implementation is about systems, not slogans.

Practical Compliance Steps for UK E-commerce Sellers

The smartest response is to treat this as a website-and-process audit, not a legal memo. Start with the pages where a customer feels committed, then work backwards to the first point of price exposure. That order helps because the Act is built around what a consumer sees and when they see it.

Fix the checkout first

Check every fee that appears after the headline price. If postage, service, handling, or booking charges are unavoidable, show them early and clearly. If the customer can only see them at the last step, the journey needs redesigning.

Tighten review controls

Set a written rule for who can request reviews, how they're moderated, and what gets removed. If you use a third-party reviews tool, make sure staff know how to spot suspicious patterns, duplicated text, and incentives that should be disclosed. Review governance is now a compliance function, not just a marketing preference.

Rewrite subscriptions and renewals

Make cancellation easy to find, easy to use, and easy to complete. Put renewal information in plain language, and stop relying on dense terms that only a lawyer would enjoy reading. If your business uses auto-renewals, the customer should understand the commitment before payment, not after.

For broader operational context, it can help to look at adjacent compliance topics too, such as sales tax for online sellers, because pricing, checkout structure, and legal disclosures often sit close together in the same customer journey.

Practical rule: the more a charge or term changes the buying decision, the more visible it should be before payment.

If you run removals, storage, or freight-adjacent services, give one person ownership of the customer journey and another of legal review. Then make them sign off together before changes go live. That simple split prevents a lot of accidental drift.

You can also sanity-check your supplier chain. If your business depends on fast dispatch, contract clarity, or bundled goods, the commercial pressure on the customer can rise quickly. A useful reference point for operational sourcing is packaging suppliers, because procurement choices often affect how consistently you can present price and service information.

Why the Consumer Rules Matter More Than the Headlines

A moving company that hides a booking fee until the final screen, or an online shop that buries a subscription renewal in fine print, is often where the first compliance problem appears. The loudest debate around the Digital Markets Competition and Consumer Act still centres on Big Tech, because the Strategic Market Status regime is the newest part of the statute. For many UK businesses, especially online retailers, movers, and logistics-heavy sellers, the consumer provisions are the part most likely to create day-to-day pressure.

The reason is straightforward. The CMA can now impose penalties of up to 10% of global turnover or £300,000, whichever is higher, and it has signalled that it will prioritise hidden fees, fake reviews, and unfair terms BCLP. That puts ordinary checkout design under a sharper spotlight than many boards expect. The practical question is how much disclosure is enough when the law asks for pricing to be shown clearly, in a timely manner, and in a way a consumer is likely to see. For shipping, delivery, and add-on service charges, that question can decide whether a customer feels informed or misled.

Where the risk sits in ordinary trading habits

A platform giant may need a specialist team for strategic market status designation, but a medium-sized retailer can get into trouble through a much simpler failure. A fee hidden behind a button, a review policy that looks casual, or a renewal path that feels hard to escape can now create real enforcement exposure. The CMA's focus on egregious breaches makes this more important, because these are exactly the kinds of practices it can test quickly.

That is why the first compliance fix is usually not a new legal theory. It is a clean, understandable customer journey. If the buyer can see the true price, trust the reviews, and cancel without a hunt, a lot of risk falls away.

The priority list for most UK sellers

Start with four actions. Review every unavoidable fee, audit your reviews process, rewrite subscription language, and test cancellation from a customer's point of view. Then record who approved each step, because if the CMA asks questions, paper trails matter as much as polished web copy.

That is the clearest way to read the Act. The digital markets arm matters mainly to a small number of powerful platforms. The consumer protection arm matters to almost every UK seller that takes customers online.