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United Kingdom · London · Compliance

PCI DSS compliance in London

Achieve PCI DSS compliance in London with Sterling: 8,100+ client engagements in 60+ countries, 20+ years.

Request a discovery callTake the PCI DSS readiness check
  • Compliance, end to end
  • London office team
  • Effivity software included
  • Academy training included

Who asks for PCI DSS in London

Clients include

  • Allianz
  • Emirates Flight Catering
  • Etihad Rail
  • Haier
  • Whirlpool
  • Emerson
In short

PCI DSS compliance in London at a glance

Every London shop, hotel, ticketing platform and online retailer that takes cards inherits the same obligation. The capital's volume of card transactions means acquirers and payment brands pay close attention, and PCI DSS is the standard they point to. PCI DSS is the payment card data security standard published by the PCI Security Standards Council, with validation through a self-assessment questionnaire or an assessor's report depending on the entity's role and the acquirer's requirements. Sterling's London office works through scoping and controls, with Effivity and Sterling Academy included with the engagement; validation follows what the acquirer or payment brand requires. National law, regulators and accreditation detail sit on the United Kingdom page rather than here.

Why here

Why PCI DSS in London

  • London merchants and online retailers taking card paymentsAcquirers set validation requirements for merchants.
  • Payment processors and service providers serving City and retail clientsClients' contracts require service providers to validate PCI DSS.

Not sure it applies to you?Answer a short set of questions and your readiness report arrives by e-mail.

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Local drivers

What drives PCI DSS in London

Demand is contract-led: acquirers and payment brands set card-data obligations, not a London authority.

Requirements

What PCI DSS requires

Strip away the vocabulary and PCI DSS asks any business that stores, processes or transmits card data to comply in six areas.

You know where card data livesThe cardholder data environment is scoped, data flows are mapped and the environment is segmented where possible.
Networks are protectedNetwork security controls restrict traffic to and from systems that handle card data, and configurations are hardened.
Stored data is minimised and protectedOnly the card data you need is kept, sensitive authentication data is not retained after authorisation except under issuer rules, and the rest is protected.
Access is restricted and authenticatedAccess to card data is limited to people who need it, with unique IDs and multi-factor authentication where required.
Systems are logged and testedActivity is logged and reviewed, vulnerabilities are scanned and patched, and penetration testing is carried out.
Policies and people keep it runningSecurity policies, staff awareness, vendor management and incident response keep controls working between assessments.

The detail is on the global hub: PCI DSS explained →

How Sterling delivers

How Sterling delivers PCI DSS in London

Sterling's London office; Sterling joins London teams on cardholder-data scoping and segmentation reviews. One team carries the work from scoping to sign-off.

Included in every engagement
  • End to end, from one team
  • Effivity ISO & GRC software
  • Preferential Sterling Academy access, with complimentary awareness training for your people
  • Internal auditor training for your audit team, as applicable to your standard
  • Vulnerability assessment on ISMS engagements

The Sterling Promise: 100% on-time completion, 100% success, 8,100+ client engagements.Sterling does not certify. Certification decisions stay with independent bodies.

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Law and accreditation

Regulations and accreditation for PCI DSS in the UK

The laws, regulators and accreditation route for PCI DSS apply across the UK, London included. They are set out on the country page: PCI DSS compliance in the UK →

Related

Standards London organisations combine with PCI DSS

ISO/IEC 27001 in LondonOften combined with PCI DSSSOC 2 in LondonOften combined with PCI DSSCyber Essentials in LondonOften combined with PCI DSS

All standards Sterling delivers in London →

PCI DSS in London: questions clients ask

Who tells a London business how to validate PCI DSS?

Your acquirer or payment brand, in the end. The PCI Security Standards Council publishes the standard, but whether and how an entity validates is decided by the organisations running compliance programmes. Read the acquirer's letter first, then scope the card data environment accordingly.

How can a London business shrink PCI DSS scope?

By keeping card data out of its own systems where possible: using hosted payment pages, point-to-point encryption or tokenisation, and segmenting what remains. Smaller scope means fewer controls to evidence. An assessor or the acquirer should confirm the reduced scope before you rely on it.

Read more

More on PCI DSS

Next step

Start with a free discovery call

A Sterling consultant goes through your sites, your customers' requirements and your target date with you. No proposal until the scope is agreed.

Book a discovery callTake the PCI DSS readiness check

Sources

  1. Financial and professional services — cityoflondon.gov.uk (accessed 8 Oct 2026)

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