Companies · category

Top IT Service Providers for .NET in the UK

457 IT service providers ranked by rating, review volume and listing quality.

Between them, the 457 IT service providers on this page cover web development (450), PHP (384), web design (365) and IT services (331). They also list work in United States of America. 457 of them have written a profile you can read before you get in touch.

We list more than 450 IT service providers in the UK listed for .NET development. The order comes from what each firm publishes and what has been verified about it, never from payment — at the top right now: Your Dev Team, Abbacus Technologies and Digijuice.

Before you shortlist, check

Work on current .NET versions, not only legacy .NET Framework
A plan for moving any old .NET Framework code forward
Automated tests and deployment you can run yourself
That you own the code and the build pipeline

Filter by fitbudget, engagement, size and more

NTT Data UK
Mobile App Development · Web Development · Web Design
NTT DATA is a trusted global innovator, employing over 100,000 people in over 50 countries around the world.
Write a review
Onkho
Web Development · Web Design · IT Services
Integrated workflow, CRM and email for accountants and bookkeepers. Practice management is the art of running a successful accounting business.
Write a review
Contino
Web Development · Web Design · IT Services
Contino is a global Enterprise DevOps, Data and Cloud Transformation Consultancy.
Write a review
Jola Cloud Solutions Ltd
Web Development · Web Design · IT Services
Jola is an award-winning, channel-only supplier of business communications, specializing in mobile data SIMs.
Write a review
nubeGO
Web Development · Web Design · IT Services
NubeGO wants to ensure that the speed and scalability of the cloud are available and ever-present in organizations across the globe.
Write a review
Cognito iQ
Web Development · Web Design · IT Services
Cognito iQ is a combination of intelligent mobile workforce management software, best-practice processes and proven techniques.
Write a review
Berkeley Square IT
Web Development · Web Design · IT Services
Berkeley Square IT specializes in permanent and contract staff for both national and international clients, for a variety of roles across a broad range of industry sectors.
Write a review
GlobalData Plc
Web Development · Web Design · IT Services
The world is changing exponentially, resulting in unprecedented opportunities and challenges that individual organizations and entire industries need to understand and navigate.
Write a review
Testhouse Ltd
Web Development · Web Design · IT Services
Testhouse is a thought and market leader in Software Quality Management, Application Lifecycle Management (ALM) and DevOps providing on-site, on-shore and off-shore test services…
Write a review
Experian
Social Media Marketing · Web Development · Web Design · Also in United States of America
Experian unlocks the power of data to create opportunities for consumers, businesses, and society.
Write a review
Open Data Institute
Mobile App Development · Web Development · Web Design
The ODI was co-founded in 2012 by the inventor of the web Sir Tim Berners-Lee and Artificial Intelligence expert Sir Nigel Shadbolt to advocate for the innovative use of open data…
Write a review
Markit
Web Development · Web Design · IT Services
IHS Markit is a global leader in information, analytics and solutions for the major industries and markets that drive economies worldwide.
Write a review
Level39
Web Development · Web Design · IT Services
Level39 is the world's most connected tech community, with over 200 tech startups and scale-ups based onsite.
Write a review
Kluster
Web Development · Web Design · IT Services
Our mission: Turning your CRM data into actionable insights to grow your sales with a smarter sales analytics and forecasting platform you can trust.
Write a review
Acturis Limited
Web Development · Web Design · IT Services
Acturis is one of the UK’s highest-rated and fastest-growing technology companies, dedicated to delivering awesome solutions for our clients, helping them streamline their business…
Write a review
Final Stage
Web Development · Web Design · IT Services
We’re reducing the mass talent wastage in the internal hiring-space and benefiting both companies and candidates in doing so.
Write a review
U Squared
Web Development · Web Design · IT Services
Founded in Jan 2017, as a spin-off from UCL research, USQRD applies AI to solve business problems.
Write a review
Osirium
Web Development · Web Design · IT Services
In the current world of outsourcing, it can be hard to see who has privileged access to what on your systems.
Write a review
Boldon James
Web Development · Web Design · IT Services
Boldon James is an industry specialist in data classification and secure messaging, delivering globally-recognized innovation, service excellence and technology solutions that…
Write a review
Stroma
Web Development · Web Design · IT Services
Stroma Group is a leading organization in the construction, energy performance, building control and software sectors, supporting the industry throughout the RIBA Plan of Work.
Write a review
Unify
Web Development · Web Design · IT Services
Unify is the Atos brand for communication and collaboration solutions.
Write a review
Lola Tech
Web Development · Web Design · IT Services
Lola is a company on a mission: to bring awesome software to the global travel industry through unconventional brilliance.
Write a review
Say It Now
Web Development · Web Design · IT Services
SayItNow is a specialist technology company that helps brands take advantage of opportunities created by consumers shifting to conversational channels Your customers increasingly…
Write a review
putitout
Web Development · Web Design · IT Services
You care about your customers, without them you are lost. You know you need to keep up with changing technology to help give you the edge.
Write a review

For vendors

Want to see your company here?

The order is earned: ratings, verified reviews and listing quality decide it, and nobody can pay to move up. There are two ways to stand out, 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 the .NET ranking

Paid · always labelled

A Sponsored card above the .NET ranked list
Marked Sponsored, and it never changes the order
Booked by the month; cancel any time

Book a spot See prices

How is this ranking worked out?

The order comes from what each firm publishes and what has been verified about it, and never from payment:

Profile completeness: the details a buyer needs to judge a firm — what it does, who it serves, how it prices, who it has worked for
Earned trust: verification, awards and the other checks a firm has actually passed
Client reviews, where they exist: the rating is smoothed, so one five-star review cannot outrank a firm with a hundred good ones, and volume counts with diminishing returns

Client reviews are still rare across this catalogue, so on most lists today the order is set by the first two. A firm near the top is the best-documented and best-verified one we hold, which is not the same claim as the best one to hire. Use the list to build a shortlist, then check the firms yourself.

Sponsored listings are labelled and shown apart from this list. How rankings work

Only firms whose profile names the UK are counted here, so a firm that lists a town but no country is not yet included.

Where else can I look?

The same list elsewhere: USA (714) · India (465) · Germany (222) · Canada (143).

Other specialisms in the UK: UI/UX design (941) · e-commerce (854) · Android app development (812) · iOS app development (800) · WordPress (752).

Every IT service provider in the UK: the full list.

Every category in the UK: the UK country page.

Other services in the UK

Same subject

More it service providers rankings

Every other way we rank it service providers — by what they do and where they are.

All 284 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 IT Service Providers for .NET in the UK

NTT Data UK

Onkho

Contino

Jola Cloud Solutions Ltd

nubeGO

Cognito iQ

Berkeley Square IT

GlobalData Plc

Testhouse Ltd

Experian

Open Data Institute

Markit

Level39

Kluster

Acturis Limited

Final Stage

U Squared

Osirium

Boldon James

Stroma

Unify

Lola Tech

Say It Now

putitout