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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

IT Document Solutions Limited
Web Development · Web Design · IT Services
IT Document Solutions Ltd a trusted provider of managed print and document solutions to businesses and organizations across the UK, the company provides a structured and…
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Fortis Hosting
Web Development · Web Design · IT Services
Fortis Hosting has arisen from over 30 years of combined experience from the Directors within the technology arena.
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Velez Managed Services
Web Development · Web Design · IT Services
Who are we? What Do We Do? Velez Managed Services is made up of a team of highly experienced engineers, some with over 20 years of experience in the IT industry.
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Company85
Web Development · Web Design · IT Services
Company85 is an independent IT services firm that leads to change, strips out the cost and safeguards information.
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Turtl
Web Development · Web Design · IT Services
Engage and convert your audience with modern content experiences created, published and analysed on Turtl’s cloud-based software.
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WM Promus
Web Development · Web Design · IT Services
WM Promus is a team of IT Operations Management experts dedicated to delivering digital transformation consultancy and solutions using the best of DevOps technologies.
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SeedLegals
Web Development · Web Design · IT Services
At SeedLegals, we make it super-easy for startups to do the legal they need to raise investment and distribute equity to their team — all at a fraction of the cost of traditional…
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Inawisdom
Web Development · Web Design · IT Services
Inawisdom's focus is on differentiation through data exploitation, using the latest enterprise-ready techniques in predictive analytics, machine learning, natural language…
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FiveAI
Artificial Intelligence - AI · Web Development · Web Design
FiveAI is developing the software to power shared, self-driving vehicle services in Europe.
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COGWORKS
Mobile App Development · Search Engine Optimization · Web Development
The Cogworks is a leading Umbraco Gold Partner and user experience, specialist.
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Aptitude Software
Web Development · Web Design · IT Services
Aptitude Software delivers specialist financial applications to equip Chief Financial Officers (and the finance function) to fulfill their strategies and ambitions.
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Seldon
Artificial Intelligence - AI · Web Development · Web Design
With roots going back to 2011, Seldon Technologies Ltd was founded in 2014 with a simple yet ambitious aim: accelerate the adoption of machine learning to solve some of the world’s…
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Crimson Limited
Web Development · Web Design · IT Services
Crimson unites its clients’ people, processes and IT systems by delivering high-value services and Microsoft-based technologies.
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Dynamo North East
Web Development · Web Design · IT Services
Dynamo is a volunteer led group set up with the core mission to ‘Grow the North East IT Economy’ through collaboration, innovation, skills.
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Appointy
Mobile App Development · Web Development · UI/UX Design
Founded in 2016, we develop a comprehensive SaaS-development platform called Saastack which helps businesses and organizations in developing world-class SaaS products with the…
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Xcite Digital
Web Development · Web Design · IT Services
Welcome to the Xcite Digital page. Check back for news, updates and the latest projects When it came to naming our company we didn’t take it lightly – we took it literally.
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Unitedgrids Ltd
Web Development · Web Design · IT Services
Unitedgrids is a Managed Service Provider with a proven track record of excellent customer service and a customer-centric culture.
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Fidessa
Web Development · Web Design · IT Services
Exceptional trading, investment and information solutions for the world's financial community.
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Mtest Labs Limited
Web Development · Web Design · IT Services
Mtest Labs is a Software Test Consultancy and Sourcing Partner. Mtest Labs work closely with Technology Leaders in providing the best talent.
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Alchemy Technology Services
Web Development · Web Design · IT Services
Alchemy is a European centre of excellence for insurance software implementation, supporting the digitisation of the global insurance industry.
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Pushologies Ltd
Mobile App Development · Web Development · UI/UX Design
Pushologies is the marriage of both, empowering content owners and marketers like never before.
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appScatter
Web Development · Web Design · IT Services
appScatter is a B2B SaaS platform that distributes, manages and monitors mobile apps across multiple app stores worldwide.
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Silicon Brighton
Web Development · Web Design · IT Services
A Brighton based collaborative technical knowledge share and networking platform, driven forward by an organization with the contacts in place to ensure sessions are well attended,…
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Fedr8 Ltd
Web Development · Web Design · IT Services
One of the organization's biggest assets is its custom legacy applications. Green Rain (Powered by Fedr8) uses Machine Learning to automate manual discovery processes.
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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

IT Document Solutions Limited

Fortis Hosting

Velez Managed Services

Company85

Turtl

WM Promus

SeedLegals

Inawisdom

FiveAI

COGWORKS

Aptitude Software

Seldon

Crimson Limited

Dynamo North East

Appointy

Xcite Digital

Unitedgrids Ltd

Fidessa

Mtest Labs Limited

Alchemy Technology Services

Pushologies Ltd

appScatter

Silicon Brighton

Fedr8 Ltd