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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

Multiplay
Web Development · Web Design · IT Services
For over 20 years Multiplay has ensured gamers have the best possible experience while gaming online.
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The Bakery
Web Development · Web Design · IT Services
We’re on a mission to bring simple, affordable, reliable and fair connectivity to everyone. So that’s our customers sorted. But what about our people?
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Traffic Digital Ltd
Mobile App Development · Web Development · Web Design
We’re a digital studio of entrepreneurial thinkers & doers, based in Dalston, London. The year that saw the launch of Twitter, Playstation 3 and erm, Windows Vista.
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Ocius Professional Services
Web Development · Web Design · IT Services
We are problem solvers and real solution provider. Working with the organization to review Technology, Processes, Security and Governance with a keen eye on the needs and vision,…
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TESLASUIT
Web Development · Web Design · IT Services
Teslasuit is the unique world's first full-body haptic suit, named CES 2019 Innovation Awards Honoree in a category of Virtual and Augmented Reality.
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Annodata Ltd
Web Development · Web Design · IT Services
Annodata is an independent company specializing in the provision of ICT and Print technology Managed Services.
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KCOM
Web Development · Web Design · IT Services
KCOM designs and delivers communications and integration services across the UK.
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Aiimi
Web Development · Web Design · IT Services
Free-thinking and brighter doing, we're the friendly, smarter alternative for organisations that understand how data expertise can help them thrive.
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BSL-IT
Web Development · Web Design · IT Services
Founded in 2016, BSL is a growing Value Add IT Reseller, based in the UK. Our mission is to be a trusted partner to assist you with any IT Procurement or advisory requirements.
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ExtraHop
Web Development · Web Design · IT Services · Also in United States of America
ExtraHop delivers enterprise cyber analytics that allows you to quickly investigate threats, ensure the delivery of critical applications, and secure your investment in the cloud.
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Secon Cyber
Web Development · Web Design · IT Services
Established in 1999 we have long-standing experience of providing class-leading cybersecurity solutions to customers ranging from small to large enterprises.
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Ceterna
Social Media Marketing · Web Development · Web Design
New or established - we understand your rapidly growing business. As you grow, so do the needs of your customers, employees, and partners.
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UMOGA
Web Development · Web Design · IT Services
Meet and connect with like-minded indies through our forums, private messaging, or IM service Chatter. Working on a project? Let everyone know what you're up a ton!
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Appsbroker Ltd
Web Development · Web Design · IT Services
Market disruptions demand a radical response, yet most organizations still rely on the cookie-cutter solutions provided by traditional consultancies using staff trained to follow…
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METCloud
Web Development · Web Design · IT Services
We are an award-winning IT Managed Service Provider and proud founder of METCloud - the #1 Cyber Secure Hybrid Cloud Platform.
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Decode Studios
Mobile App Development · Web Development · Web Design
Decode Studios was set up by Founder and Technical Director, Dan Brennan in 2008.
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Canonical Ltd.
Web Development · Web Design · IT Services
At Canonical, we believe in the power of open source to change the world Canonical was created alongside Ubuntu to help it reach a wider market.
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KIVALUE
Web Development · Web Design · IT Services
We are a team of specialists passionated about data intelligence and innovations, leveraging cross-industry expertise in transformation.
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Testing Circle
Web Development · Web Design · IT Services
Testing Circle is a leading Software Testing Services provider to leading Finance, Telco, Government, Retail, Gaming, Media and FTSE 100 clients.
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EMIS Health
Web Development · Web Design · IT Services
We’re the UK leader in clinical IT systems for joined-up patient care.
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Content and Code
Web Development · Web Design · IT Services
Content and Code solves business challenges with creative IT solutions.
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Torsion Information Security
Web Development · Web Design · IT Services
TORSION delivers Secure Data Access Control, invisibly integrated with your business and IT.
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Joseph Harry LTD
Web Development · Web Design · IT Services
Joseph Harry Limited is a recruitment and headhunting company that specializes in the provision of the contract and permanent IT staff to the financial sector.
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Williams Lea Tag
Search Engine Optimization · Web Development · Web Design
Williams Lea Tag (WLT) is the leading independent provider of Marketing and Communications Services.
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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.

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

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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

Multiplay

The Bakery

Traffic Digital Ltd

Ocius Professional Services

TESLASUIT

Annodata Ltd

KCOM

Aiimi

BSL-IT

ExtraHop

Secon Cyber

Ceterna

UMOGA

Appsbroker Ltd

METCloud

Decode Studios

Canonical Ltd.

KIVALUE

Testing Circle

EMIS Health

Content and Code

Torsion Information Security

Joseph Harry LTD

Williams Lea Tag