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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

Ringtail Software
Mobile App Development · Web Development · iOS App
Ringtail is a software consultancy specializing in IoT, embedded and cloud systems.
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Wales Interactive Services
Mobile App Development · Web Development · iOS App
Wales Interactive is a multi-award winning video games and interactive movie publisher & developer.
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Milo Creative
Mobile App Development · Web Development · Web Design
We turn ideas into great digital products and design and develop apps that people love to use.
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Kite Distribution
Mobile App Development · Web Development · iOS App
Kite Distribution is a value-added distributor that specializes in bringing innovative and disruptive technologies to the UK channel.
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Dufrain
Mobile App Development · Web Development · UI/UX Design
Dufrain is a market-leading Data Management, Analytics & BI consultancy.
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Metafused
Mobile App Development · Web Development · PHP
Trading, Treasury and Capital markets are under tremendous revenue and margin pressures. Being accurate and innovative with a lot less at the speed of now is imperative.
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We Talk IT
Mobile App Development · Web Development · iOS App
Our Headquarters is based in Albourne (near Brighton and Hove), United Kingdom.
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Precipice Design
Mobile App Development · Web Development · iOS App
Designing great products, brands, and business strategy are more than having the right features, latest technologies and coolest look.
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IOT-as-a-Service.com
Mobile App Development · Web Development · iOS App
IOT-as-a-Service.com is a company that helps customers to maximize the opportunity around IoT, by helping the customer to understand the opportunity, define the winning strategy,…
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Computaris International
Mobile App Development · Web Development · iOS App
Computaris, the member of the R Systems Group, is a digital transformation and strategy consulting company with more than 25 years of experience in technology and telecom.
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Magma Digital Ltd
Mobile App Development · Web Development · Web Design
Magma Digital was est in 1999 by Jeremy & Priscilla Coates following their careers as Occupational Therapists in the NHS.
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Techtiq
Mobile App Development · Search Engine Optimization · Web Development
TechTIQ was born out of helping companies navigate the digital arena, and very seamlessly build digital products without having to go through the hassle of building their own…
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Code & Pepper
Mobile App Development · Web Development · UI/UX Design
Code & Pepper was established in 2006 by two technology professionals – Lucas Korol & Adam Pogorzelski.
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Razor Ltd
Custom Software Development · Search Engine Optimization · Web Development
We co-create digital products and systems for transformational impact. Using our broad experience of software and design, we make the complex simple.
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AtomicMedia
Mobile App Development · Search Engine Optimization · Web Development
AtomicMedia is an independently owned, award-winning digital agency specializing in app development, web design, and video production.
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Web Design Sun®
Mobile App Development · Web Development · UI/UX Design
We are Web Design and Development Fully Remote Company focused on Client’s Results and Revenue.
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Ballard Chalmers Ltd
Mobile App Development · Web Development · UI/UX Design
Ballard Chalmers is one of the UK’s leading custom software engineering companies, specializing in enterprise applications on the Microsoft Platform.
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ARCH
Mobile App Development · Web Development · UI/UX Design
We are an award-winning consultancy that designs & builds software across the web, mobile, and back-office for leading brands and start-ups.
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Code Wizards Ltd
Mobile App Development · Web Development · Web Design
We mix invention with engineering: producing the best solutions that automatically scale for your business! Who are Code Wizards? Good question!
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PortSwigger Web Security
Web Development · Web Design · Software Development
PortSwigger Web Security is a global leader in the creation of software tools for security testing of web applications.
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Innovation Group Limited
Web Development · Web Design · IT Services
Innovation Group manages critical incidents in the car and home on behalf of the world's leading insurers, brokers and fleet managers, together with warranty and service plan…
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Degree 53
Mobile App Development · Custom Software Development · ERP Software Development
We're a leading technology provider, specializing in the development of bespoke gambling and betting platforms, web and mobile solutions, as well as UX, design and consultancy…
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Target Group
Web Development · Web Design · IT Services
Target Group is a leading provider of Business Process Outsourcing and operational transformation, specializing in the provision of lending, investments and savings services.
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Cravens
Web Development · Web Design · IT Services
We believe a strong purpose should be at the heart of every organization. It can inspire, cut complexity and answer the questions in business that matter.
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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

Ringtail Software

Wales Interactive Services

Milo Creative

Kite Distribution

Dufrain

Metafused

We Talk IT

Precipice Design

IOT-as-a-Service.com

Computaris International

Magma Digital Ltd

Techtiq

Code & Pepper

Razor Ltd

AtomicMedia

Web Design Sun®

Ballard Chalmers Ltd

ARCH

Code Wizards Ltd

PortSwigger Web Security

Innovation Group Limited

Degree 53

Target Group

Cravens