Ten QA providers that work with UK teams: where each is based, whether testing is its main business, and who it suits. Facts are checked against public sources and dated.
For most UK teams the shortlist splits in two. Large regulated programmes often go to full-service IT firms with UK offices, such as Sogeti, Cognizant and Cigniti. Teams that want an independent QA partner working inside their sprints usually compare testing specialists: Qualitest, Edge Testing (Resillion), Zoonou, DeviQA, QASource and BetterQA. For games and media, Testronic is the specialist.
How we chose
- 01Testing is the main business, or we say plainly that it is not.
- 02Works with UK teams from a UK office or with real overlap on UK hours.
- 03Public evidence: client reviews where they exist, a published service scope.
- 04Checked facts only: headquarters, founding year and model, each with a source, verified May-October 2026.
- 05No pay to appear. Nobody on this list paid or was asked to.
Side-by-side comparison
Top QA companies serving the UK at a glance. Hover any cell for the source.
| Rank | Company | Headquarters | Founded | Reviews | Own tools | Independent QA | Key specialization | Engagement model |
|---|---|---|---|---|---|---|---|---|
| 1 | BetterQA | Cluj-Napoca, Romania | 2018 | 4.9 (70) Clutch | 5BugBoard, Flows, Auditi, BetterFlow, AI Security Toolkit | Yes | Test automation you record and replay, run headless in batches, and export to Playwright, Cypress or Selenium. 20 in-house security checks plus 15 open-source scanners, correlated in one pass. Healthcare/medtech, fintech | Independent, nearshore hybrid |
| 2 | Qualitest | New York, USA | 1997 | No verified reviews | 0 | Yes | Enterprise QA, AI Testing | Independent QA |
| 3 | Edge Testing Solutions | Glasgow, UK | 2007 | No verified reviews | 0 | Yes | Test Strategy, Automation | Independent QA |
| 4 | DeviQA | Warsaw, Poland / Kharkiv, Ukraine | 2010 | 5.0 (34) Clutch | 0 | Yes | Full-Cycle QA | Independent QA |
| 5 | QASource | Pleasanton, USA | 2002 | 4.8 (17) Clutch | 0 | Yes | Automation, DevOps | Independent QA |
| 6 | Testronic | London, UK | 1989 | No verified reviews | 0 | Yes | Media, Games, Localization | Independent QA |
| 7 | Sogeti UK (Capgemini) | London, UK | 1967 | No verified reviews | 0 | No | Enterprise, Cybersecurity | Full-service |
| 8 | Cognizant | Teaneck, USA | 1994 | No verified reviews | 0 | No | Enterprise IT, Digital | Full-service |
| 9 | Cigniti (Coforge) | Irving, USA | 1998 | No verified reviews | 0 | No | Digital Assurance | Full-service |
| 10 | Zoonou | Eastbourne, UK | 2007 | No verified reviews | 0 | Yes | Independent testing and QA, employee-owned, certified B Corp | Independent QA |
Data verified October 2026. Hover any cell for source URL. Unverified figures are shown as "-", or "No verified reviews" in the Reviews column.
Send us what you are building. We will tell you where we fit, where we do not, and who else on this list is worth a call. No pitch, no pressure.
Book a 30-minute callThe ten companies
1BetterQA
An independent QA company from Cluj-Napoca, founded in 2018. We test and do not build your product, so nobody marks their own homework. Our 50+ engineers work as a managed testing team or inside your own team, from one month, and use five QA tools we built ourselves at no extra cost.
Why first: it is our list. Judge us on the same criteria as everyone else, and see how a QA outsourcing engagement with us works.
- UK hours: our UK team covers the full UK working day, 09:00-17:00 London
- Rate: EUR 20-45 per hour by seniority, tools included
- Reviews: 4.9 on Clutch from 70 reviews
- Paperwork: NDA and DPA from day one; ISO 27001:2022
- Trying us: the first month is a trial; the first 2 weeks are complimentary on ongoing work if you are not happy
- Best for: product teams in fintech, healthtech and SaaS that want testers in their sprints
UK-headquartered testing firms
Three firms based in the UK, all with testing as the main business.
3Edge Testing Solutions
Test strategy and automation, now part of Resillion. Suits: UK organisations that want a UK-headquartered testing firm.
6Testronic
Media, games and localisation testing. Suits: studios and streaming services more than business software.
10Zoonou
Employee-owned testing and QA company and certified B Corp, working across private, public and charity sectors. Suits: UK organisations that want an onshore, testing-only partner.
Independent QA from the US or nearshore
Testing is the main business. Ask each one who is online at 09:00 London.
2Qualitest
Testing at enterprise scale, including AI testing, with no development services. Suits: large programmes that want one testing vendor across many products.
4DeviQA
Full-cycle QA. 5.0 on Clutch from 34 reviews; published rates from $25 per hour. Suits: teams comparing nearshore QA on price and reviews.
5QASource
Automation and DevOps testing. 4.8 on Clutch from 17 reviews; from $30 per hour. Worth knowing: US-headquartered, so ask who is online at 09:00 London.
Full-service IT firms
Three large IT services firms with a QA practice. Useful when you already buy other services from them.
7Sogeti UK (Capgemini)
Enterprise testing and cybersecurity inside the Capgemini group. Worth knowing: the group also builds software, so testing is not independent of delivery.
8Cognizant
A Fortune 500 IT services firm; QA is one offering among many. Suits: enterprises already buying other services from Cognizant.
9Cigniti (Coforge)
Digital assurance; acquired by Coforge in 2024. Worth knowing: Coforge also develops software, so check who tests whose code.
Sources: each company's own site and Clutch profile, as recorded in our comparison data (verified May-October 2026). Spot an error? Write to office@betterqa.co and we will correct it.
Want a team rather than a list?
Still comparing?
Eight questions to ask any provider, ours included, with the red flags.
How to evaluate a QA companyQuestions UK buyers ask
How much does outsourced QA cost for a UK company?
It depends on seniority and the model: a managed team, or testers inside your team. Our rate is EUR 20-45 per hour by seniority, tools included. Ask every provider for a range by seniority before any long discovery phase.
Can a nearshore team cover UK working hours?
Romania is two hours ahead of London, so yes. Our UK team works 09:00-17:00 London time. With any provider, ask who is online at 09:00 London and who answers at 16:30.
Is it safe to give an outside QA team access to our systems?
Sign an NDA and a data processing agreement before access, and ask where test data is stored. An EU-based provider works under GDPR directly; we sign both from day one.
Independent QA company or full-service IT firm?
An independent QA company only tests, so its reports have no reason to look away from its own code. A full-service firm can build and test together, which suits some large programmes. Both are on this list, marked.
How fast can a QA partner start?
Usually in weeks. Contracts and system access often take longer than finding the people. We send a written proposal within 2 business days of the first call.
How should we compare the companies here?
Ask each one the same questions about price, trials, who starts, how they work in your sprints and what happens when you leave. Our evaluation guide lists eight, with good and bad answers.