Companies · category

Top Software Testing Companies in the UK

4 of 10 software testing companies ranked on evidence in the Q4 2026 edition.

Between them, the 10 best-ranked of these 11 software testing companies cover web development (6), web design (6), eCommerce (5) and IT services (4). 10 of them have written a profile you can read before you get in touch.

TrustList ranking

Q4 2026 edition

4 of 10 software testing companies ranked on evidence held on 12 October 2026: client reviews, vetting, awards and facts each business states on its own website, which we read and date. Nobody pays to be placed.

Positions are fixed for the quarter; the next edition is due in January 2027.

How this is ranked About this edition

All software testing companies 4 ranked SMEs 4 ranked

Filter by fitbudget, engagement, size and more

Inline Manual
Goals · Learning
Inline Manual is a digital adoption platform that lets software teams build guidance inside their own applications.
Write a review
Why #1: Address in United Kingdom · Founded 2012 · Client numbers stated on its own website, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
2T
2i Testing
Web Development · Web Design · IT Services
2i Testing provides independent software testing and quality assurance consultancy, mainly for UK financial services and public bodies
Write a review
Why #2: Based in Edinburgh, UK · Founded 2005 · Team of 100+, as stated on its own website, read 6 Oct 2026
Not yet on record: client reviews, vetting.
Testing Circle
Web Development · Web Design · IT Services
Testing Circle is a London software testing services company. It provides consultancy and supplies testing staff to clients across the UK and Europe, and it has done so since 2005.
Write a review
Why #3: Based in London, UK · Founded 2005, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Testnomics
Web Development · Web Design · IT Services
Testnomics is a software testing and quality assurance service provider based in the United Kingdom.
Write a review
Why #4: Based in United Kingdom · Founded 2018, as stated on its own website, read 5 Oct 2026
Not yet on record: client reviews, vetting.
Also listed, not yet ranked. We hold nothing checkable on these yet that ranks them here: no client review, vetting, award, expert review, or fact stated on their own website (and on a place ranking, where they are based). They follow in order of their TrustList Score. How TrustList ranks · Get vetted, free
Edge Testing Solutions
Automation · Retail · Also in London and Birmingham
Edge Testing Solutions is a software testing company that now trades as Resillion. It provides quality assurance, test automation and managed testing services to enterprises.
Write a review
On record: Based in Glasgow · Team of 200+, as stated on its own website, read 9 Oct 2026
Testhouse Ltd
Web Development · Web Design · IT Services
Testhouse Ltd is a software quality engineering firm. It provides testing, consulting and training, delivered on-site, on-shore or off-shore, either as an outsourced service or on…
Write a review
On record: Team of 200+, as stated on its own website, read 5 Oct 2026
BugFinders
Web Development · Web Design · Software Testing
BugFinders is a crowdsourced software testing company. It tests websites and mobile apps that customers use, drawing on a community of more than 55,000 professional testers.
Write a review
Digivante
Web Development · Web Design · Software Testing
Digivante helps organisations test and improve their digital services.
Write a review
Imersifi
Learning
Imersifi is a virtual reality training company based in Swansea.
Write a review
On record: Based in Swansea
KualitySoft.
Quality Assurance · Goals · Retail · Also in Europe
KualitySoft. is an independent software testing and quality assurance company.
Write a review
On record: Address in United Kingdom

For vendors

Want to see your company here?

The order is earned on evidence: client reviews, vetting, awards and the facts a business states on its own website, which we read and date. Nobody can pay to move up. Add reviews or verified facts to your free profile to move up at the next edition; there are two ways to stand out now, and each one says what it is.

Not on TrustList yet? Add your company or claim its listing, free.

Get vetted

Free

We check your registration, your website and your clients
Approved listings show the Verified badge here and on their profile
It earns a rank number and counts towards the TrustList Score; renewed yearly

Apply for vetting How vetting works

Sponsor this ranking

Paid · always labelled

A Sponsored card above the ranked list, up to three per ranking
Marked Sponsored, and it never changes the order
Booked by the month; cancel any time

Sponsor this ranking See prices

Top B2B companies in the UK38 categories ranked, 2,097 companies

Same subject

More software testing companies rankings

Every other way we rank software testing companies, by what they do and where they are.

All 61 rankings

Articles

More categories

Jump to another ranked category.

All categories

Keep exploring

More on TrustList

Everything here links back to the same verified catalogue. Pick your next stop.

Top Software Testing Companies in the UK

Inline Manual

2i Testing

Testing Circle

Testnomics

Edge Testing Solutions

Testhouse Ltd

BugFinders

Digivante

Imersifi

KualitySoft.

Want to see your company here?

Get vetted

Sponsor this ranking

More software testing companies rankings

Related reading

UK: funding calls and deadlines closing soon (week of 26 October 2026)

Former e& chief Hatem Dowidar invests in Cairo's Tactful AI

Fintel buys Mortgage Brain outright for £38.4m

More categories

More on TrustList