SOC 2 Auditors in the UK (2026)

UK companies selling into the US market increasingly run into a familiar request from prospects and partners: a SOC 2 report. SOC 2 is a US framework, so finding the right auditor and understanding how it fits alongside UK and EU obligations like GDPR and ISO 27001 takes a bit more research than it does for a US-based company. This guide covers who can audit you, what it costs, and how SOC 2 relates to the frameworks UK companies already know.

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Do UK Companies Need SOC 2 or ISO 27001?

Most UK companies pursue SOC 2 because a US customer or partner specifically asked for it, not as a replacement for ISO 27001. The two frameworks overlap heavily on security controls, but SOC 2 is the report US enterprise buyers and procurement teams recognize and expect during vendor security reviews.

ISO 27001 remains the more widely recognized certification across the UK and EU, and many UK companies already hold it before they consider SOC 2. If your customer base is split between UK/EU enterprise buyers and US SaaS buyers, holding both gives you the broadest coverage. If your growth is concentrated in the US market, SOC 2 is usually the higher-priority report to get first.

Who Can Perform a SOC 2 Audit for a UK Company?

SOC 2 reports are issued under AICPA standards by licensed US CPA firms, not by UK-based certification bodies. This surprises some UK founders who assume any local security auditor can issue one, since ISO 27001 certification works differently and is issued by accredited UK certification bodies.

In practice, this means UK companies work with a US CPA firm remotely for the audit itself. Many of these firms serve UK and European clients regularly and run the entire engagement, from scoping calls to evidence review to report delivery, over video calls and shared evidence portals. A handful of firms also maintain a UK presence or UK-based staff who understand European data protection context, which can smooth communication during fieldwork.

When evaluating firms, ask directly how many UK or European clients they have audited and whether the team has experience working across time zones and with GDPR-relevant control language.

How Much Does a SOC 2 Audit Cost in the UK?

SOC 2 audit fees for UK companies generally fall in the same $7,500 to $60,000 range seen globally, since the auditor's fee structure is driven by report type, trust services criteria in scope, and company complexity rather than the company's home country. A first Type I report for a small UK SaaS company typically lands toward the lower end of that range, while a multi-criteria Type II for a larger organization costs more.

One UK-specific cost factor worth planning for is currency and payment terms. Most US CPA firms quote and invoice in USD, so build exchange rate movement into your budget if you are paying from a GBP account. Beyond the audit fee itself, factor in the cost of any readiness work needed to prepare policies and evidence, particularly if you are mapping controls to GDPR requirements alongside SOC 2 criteria for the first time.

GDPR and ISO 27001 Overlap with SOC 2

SOC 2 and GDPR address different problems. SOC 2 evaluates whether your security, availability, and other Trust Services Criteria controls are designed and operating effectively. GDPR is a legal framework governing how you collect, process, and protect personal data of individuals in the UK and EU. Neither replaces the other, but a well-run SOC 2 audit typically strengthens your GDPR posture because many of the same controls, access management, encryption, incident response, and vendor oversight, support both.

If you already hold ISO 27001, expect meaningful evidence reuse. Access control policies, risk assessments, and incident response procedures built for ISO 27001 usually map closely to SOC 2 criteria, which can shorten your readiness timeline. Ask prospective auditors whether they can review your existing ISO 27001 documentation as a starting point rather than asking you to rebuild evidence from scratch.

What US Buyers Expect from a UK Vendor's SOC 2 Report

US enterprise buyers evaluating a UK vendor generally expect the same SOC 2 Type II report they would ask for from a US-based company, covering a 3 to 12 month observation period under the Security criterion at minimum. Buyers rarely make exceptions for company location, so plan your audit timeline the same way a US company would: start readiness work early, and budget several months for the observation period if a Type II is what your deals require.

Some US buyers may also ask about data residency and where your infrastructure and subprocessors are located. Being able to answer clearly, alongside your SOC 2 report, helps close deals faster and reduces the number of follow-up security questionnaires you receive.

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SOC 2 in the UK FAQs

Can a UK-based auditor issue a SOC 2 report?

No. Only licensed US CPA firms can issue a SOC 2 report under AICPA standards. UK-based security consultancies can help you prepare for the audit, but the final report must come from a licensed CPA firm.

Is SOC 2 legally required for UK companies?

No. SOC 2 is not a legal requirement in the UK or anywhere else. It is a voluntary attestation that companies pursue when customers, usually in the US, require it as part of vendor security reviews.

How long does a SOC 2 audit take for a UK company?

Timelines are the same as for any company: a Type I typically takes 4 to 8 weeks, while a Type II requires a 3 to 12 month observation period plus several weeks for report delivery. Time zone differences with a US auditor rarely add meaningful delay once evidence collection is underway.

Does SOC 2 replace ISO 27001 for UK companies?

No. The two are separate frameworks serving different audiences. SOC 2 is expected primarily by US buyers, while ISO 27001 remains more widely recognized across the UK and EU. Many growing UK companies eventually hold both.

Can a UK company use compliance automation platforms like Vanta or Drata?

Yes. Compliance platforms like Vanta, Drata, and Secureframe work the same way for UK companies as they do for US companies, connecting to cloud infrastructure and collecting evidence continuously. Your auditor still needs to be a licensed US CPA firm regardless of which platform you use.