Online shopping is a big part of UK retail: 28.8% of GB retail sales were made online in September 2026, according to the Office for National Statistics. If you sell to UK online shops, the payment providers at their checkout tell you a lot. They show who a shop works with today, which competitors you're up against, and which shops might want to switch. So we counted them.
TAMI AI looked at every UK-registered company whose website has an add-to-cart and online payments, and recorded which payment providers show at checkout. This post shares the counts for 16 providers, explains how we got them, and shows why other sources give very different numbers.
Key takeaways
- TAMI AI found 423,904 UK online shops with an add-to-cart and online payments (13 November 2026).
- PayPal shows at checkout on 235,893 of them (55.6%). Apple Pay is next at 119,487, then Google Pay at 74,547.
- Stripe shows on 49,727 UK online shops and Klarna on 43,607. About 11,000 shops show both.
- Adyen shows on 2,126 UK online shops.
- Other sources count stores, websites or companies in different ways, so their numbers differ a lot.
How many UK online shops use each payment provider?
A payment provider is the company that handles a shop's online payments or offers a way to pay at checkout, such as PayPal, Stripe or Klarna. PayPal is the most common payment provider at UK online checkouts. It shows on 235,893 of the 423,904 UK online shops TAMI AI counted, or 55.6%. Apple Pay (119,487), Google Pay (74,547), Stripe (49,727) and Klarna (43,607) complete the top 5.
| Payment provider detected at checkout | UK online shops | Share of 423,904 |
|---|---|---|
| PayPal | 235,893 | 55.6% |
| Apple Pay | 119,487 | 28.2% |
| Google Pay | 74,547 | 17.6% |
| Stripe | 49,727 | 11.7% |
| Klarna | 43,607 | 10.3% |
| Amazon Pay | 19,538 | 4.6% |
| Opayo (formerly Sage Pay) | 9,622 | 2.3% |
| Worldpay | 8,793 | 2.1% |
| Braintree | 5,399 | 1.3% |
| Adyen | 2,126 | 0.5% |
| GoCardless | 1,678 | 0.4% |
| Barclaycard ePDQ | 1,392 | 0.3% |
| Global Payments | 1,154 | 0.3% |
| Mollie | 843 | 0.2% |
| Elavon | 705 | 0.2% |
| Trust Payments | 300 | 0.1% |
Source: TAMI AI web app, 13 November 2026. A shop can show more than one provider, so the shares add up to more than 100%.
PayPal, Apple Pay and Google Pay lead
The 3 most common names at UK checkouts are PayPal and the 2 phone wallets. PayPal shows on more than half of UK online shops. Apple Pay shows on more than a quarter, and Google Pay on about 1 in 6.
That matches how UK shoppers pay. UK Finance reported in August 2026 that 65% of UK adults were registered for at least one mobile payment service in 2025, up from 57% in 2024. Cards made up 64% of all UK payments in 2025. Wallets such as Apple Pay and Google Pay sit on top of those cards, which is why so many shops offer them. Amazon Pay, another way to pay with a stored account, shows on 19,538 UK online shops.
For sellers, this means a wallet on its own tells you little. Almost every shop with a modern checkout has one. The more useful names are the providers underneath.
Stripe vs Klarna, and the 11,000 shops that show both
Stripe shows at checkout on 49,727 UK online shops (11.7%). Klarna shows on 43,607 (10.3%). Together, 82,295 UK online shops show Stripe, Klarna or both. That means 11,039 shops show both at once.
That overlap is worth knowing. A shop that offers Klarna next to a Stripe checkout has added "buy now, pay later" to its payment options. Some will have switched Klarna on inside Stripe's own checkout, so the overlap partly reflects how the 2 work together. Either way, these are shops that offer more than one way to pay.
For context, Klarna said in May 2025 that it had 11 million active UK customers and nearly 60,000 UK retailers. Klarna's figure is its own count of the retailers it works with, measured a different way from a count of website checkouts, so the 2 numbers won't match.
Adyen, Worldpay, Opayo and the other card providers
Below the top 5, other card and payment providers appear in smaller numbers:
- Opayo (formerly Sage Pay): 9,622 UK online shops
- Worldpay: 8,793
- Braintree: 5,399
- Adyen: 2,126
- Barclaycard ePDQ: 1,392
- Global Payments: 1,154
- Elavon: 705
As far as we know, no other public source gives a count of UK online shops using Adyen.
Further down the list, GoCardless shows on 1,678 checkouts, Mollie on 843 and Trust Payments on 300.
Why other counts are so different
Ask 3 sources how many UK shops use Stripe and you'll get 3 very different answers. Each one counts something different.
| Source | What it counts | Stripe in the UK | Date |
|---|---|---|---|
| TAMI AI | UK-registered companies whose website has an add-to-cart and online payments, with Stripe detected at checkout | 49,727 | 13 Nov 2026 |
| Store Leads | Online stores it tracks in the UK | 23,569 | 6 Nov 2026 |
| Firmbase | UK ecommerce companies matched to Companies House, out of 2,180 with a payment system detected | 775 | June 2026 |
None of these is wrong. Payment provider data is a kind of technographic data, and every source collects it differently. A count of stores, a count of companies and a count of websites will never match. Before you size a market, check what is being counted, which country rule is used (where the company is registered, or where the store sells), and when the data was collected.
One more reason counts differ: some payments are hidden. Shopify Payments runs on Stripe, but a Shopify store's checkout doesn't show Stripe. So every source, ours included, will under-count Stripe on Shopify stores.
How we counted
Detected at checkout means the payment provider is visible on the shop's public website, where it offers that way to pay.
Method: TAMI AI web app, 13 November 2026. We counted UK-registered companies whose website has an add-to-cart button and accepts online payments: 423,904 in total. For each payment provider, we counted the companies where that provider is detected at checkout.
What a "shop" means here: 1 UK-registered company. A company with several store websites counts once.
What the counts include: every matching company, not only parent companies. Some are not traditional retailers, such as football clubs, airports and software firms that sell online. We kept them in, because they run online checkouts too.
What isn't counted: Clearpay, Square, Shopify Payments and SumUp aren't included in this data set, and nor are Checkout.com, Dojo, Revolut or Paymentsense. A detected provider means the provider shows at checkout. It doesn't tell you how much a shop sells through it.
Disclosure: TAMI AI is our product. These counts come from the same data our customers use.
How to find UK shops by payment provider
If you want the shops behind a number, not just the number, you can find companies by payment provider in TAMI AI in 3 steps:
- Filter the market. Choose United Kingdom, and companies with an add-to-cart and online payments.
- Choose the provider. Pick the payment provider, for example Stripe, Klarna or Adyen. You can include one and exclude another, to find shops that use Stripe but not Klarna.
- Add the people. Add the decision makers, such as the head of ecommerce or payments, with verified contact details.
For a full walkthrough, see our guide on how to find ecommerce merchants using Stripe. Payments teams can see more on our B2B data for fintech and payments page, and ecommerce software teams on our ecommerce company data page. To check one shop at a time, the TAMI AI Chrome extension shows the payment providers on any store's website in one click.
Frequently asked questions
What is the most used payment provider among UK online shops?
PayPal. It shows at checkout on 235,893 of the 423,904 UK online shops TAMI AI counted on 13 November 2026, or 55.6%. Apple Pay and Google Pay are next.
Do more UK online shops use PayPal or Stripe?
PayPal, by a wide margin. TAMI AI found PayPal at checkout on 235,893 UK online shops and Stripe on 49,727 (13 November 2026).
How many UK online shops accept Klarna?
TAMI AI found Klarna at checkout on 43,607 UK online shops (13 November 2026). Klarna itself said in May 2025 that it worked with nearly 60,000 UK retailers, counted its own way.
How is a payment provider detected at checkout?
TAMI AI reads each shop's public website and records the payment providers it finds there. It counts which providers are present, not how much is paid through each one.
How do I find a list of UK companies that use Stripe or Adyen?
Use a B2B data tool that filters by payment provider. In TAMI AI, filter by country and online payments, choose Stripe or Adyen, then add the contacts. Our guide on how to find ecommerce merchants using Stripe walks through it.
Final thoughts
PayPal and the phone wallets are everywhere at UK checkouts. The more useful picture sits underneath: about 50,000 UK online shops show Stripe, more than 43,000 show Klarna, about 11,000 show both, and 2,126 show Adyen. For anyone selling payments, fintech or ecommerce software, that's a market you can size and then reach.
Book a demo to see these counts, and the companies behind them, in TAMI AI.
Sources
- TAMI AI web app counts, 13 November 2026 (method above).
- Office for National Statistics, Retail sales, Great Britain: September 2026 (23 October 2026).
- UK Finance, Digital payments continue to grow as mobile wallets become more popular (19 August 2026).
- Klarna, Klarna hits 11 million UK customers as UK revenue soars 30% (2 May 2025).
- Store Leads, Stripe in the United Kingdom (updated 6 November 2026).
- Firmbase, Payments used by UK e-commerce companies (June 2026).
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