Grant Thornton UK
Independent service auditor reports against ISAE, AICPA SOC and AAF standards from a major UK audit firm.
Overview
Grant Thornton UK is a large multi-office chartered accountancy and audit firm offering Service Auditor Reports (SAR) that give independent assurance over outsourced service providers' controls. Its evidence page confirms reports based on ISAE (3402/3000), AICPA (SOC 1/2/3) and AAF standards, covering Type 1 and Type 2 engagements. Clients referenced include IT service providers, software companies, property management and financial services organisations.
Strengths
- ✓Established large UK audit firm capable of issuing AICPA SOC 1/2/3 and ISAE/AAF reports
- ✓Offers both Type 1 and Type 2 examinations across multiple control standards
- ✓Cross-sector experience including IT, software and financial services
Consider
- •As a large national firm, engagement cost and lead times may exceed those of boutique specialists
- •Page frames SOC alongside ISAE/AAF rather than as a US-style SOC-only specialism
Frameworks covered
Regions served
Pricing and timeline in context
Based in London, UK, Grant Thornton UK quotes SOC 2 work in the $18K–$90K band — in line with the national firm median of $18K–$90K across the firms we track. As an AICPA-licensed CPA firm it issues SOC 1, SOC 2 Type 1, and SOC 2 Type 2 reports directly, and the fee scales with your headcount, the Trust Services Criteria in scope, and any frameworks you bundle. Plan for roughly 8–22 weeks on a Type 2 engagement. Compare it against the full SOC 2 audit cost benchmark before you commit.
Who Grant Thornton UK is for
Grant Thornton UK works most often with SaaS, Fintech, and Healthcare companies. Scale-ups and mid-market companies that want experienced, credible coverage without Big Four pricing are the typical fit.
Frequently asked questions
How much does a Grant Thornton UK SOC 2 audit cost?
Grant Thornton UK's SOC 2 engagements typically run $18K–$90K, depending on your headcount, the Trust Services Criteria in scope, and how many frameworks you bundle. Because no firm publishes fixed pricing, request a scoped quote — you can get three matched quotes on identical scope to compare.
How long does a Grant Thornton UK SOC 2 audit take?
A typical Type 2 engagement with Grant Thornton UK takes about 8–22 weeks from kickoff to report, plus the observation window itself. Use the timeline calculator to estimate your own schedule.
What frameworks does Grant Thornton UK cover?
Grant Thornton UK covers SOC 1, SOC 2 Type 1, and SOC 2 Type 2. If you need several of these, bundling them into one engagement is usually cheaper than auditing each separately.
Is Grant Thornton UK an AICPA-licensed CPA firm?
Yes. Grant Thornton UK is an AICPA-licensed CPA firm, which is a requirement to issue a SOC 2 report — only licensed CPA firms can. It's worth confirming a firm's AICPA peer-review status before signing; see questions to ask a SOC 2 auditor.
Where does Grant Thornton UK operate?
Grant Thornton UK is headquartered in London, UK and serves clients across United Kingdom. SOC 2 is a US attestation standard, so a US-licensed firm can serve clients wherever they are based.
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