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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

BCN Group Ltd
Web Development · Web Design · IT Services
BCN was formed in Wilmslow, just south of Manchester, in 2009 by two entrepreneurs Simon Kelf and Matt Smith.
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Outsource Accelerator
Web Development · Web Design · IT Services
Outsource Accelerator was founded by Derek Gallimore in response to the need for independent unbiased information and education on outsourcing and offshoring.
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Civica
Web Development · Web Design · IT Services
Civica is a market-leading specialist in cloud software, digital solutions and managed services that help teams and organisations around the world to transform the way they work.
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Banntech Ltd
Web Development · UI/UX Design · Software Development
A Cutting edge software development and Web Creation company. We develop software to run and manage Companies, Sales Functions, Human Resources, Health and Safety, Accreditation,…
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Brigantia Partners Limited
Web Development · Web Design · IT Services
Brigantia is a value-added managed services distributor providing a comprehensive range of cyber-security solutions complemented by secure, enterprise-class data communications and…
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XMA
Web Development · Web Design · IT Services
Our purpose is simple. To deliver IT solutions that enable customers to evolve and transform the way they work.
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Instem
Web Development · Web Design · IT Services
Instem provides advanced and best-in-class IT solutions to the global health and life sciences community which improves the productivity of their processes in the discovery and…
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Ability2code Ltd
Web Development · IT Services · Software Development
Accelerate digital transformation in your company, manage change, and ensure future business agility with Ability2Code’s complete custom bespoke software development services.
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Trunomi
Web Development · Web Design · IT Services
Trunomi is the multi-award-winning Consent Management and Personal Data Rights Platform driving a new level of transparency and trust between business and consumers.
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Yoti Ltd
Web Design · IT Services · UI/UX Design
Yoti is a digital identity system that provides a simple and secure way of proving identities, online and face to face.
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Virgin Media
Web Development · Web Design · IT Services
We help to create a digital world that makes good things happen: for our customers and the communities in which we operate.
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Daisy Corporate Services
Web Development · Web Design · IT Services
Founded by current Chairman, Matthew Riley in 2001, Daisy is a group of four independent businesses providing digital infrastructure products, services, and solutions to business.
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Exponea
Web Development · Web Design · IT Services
We envision a future where online retailers, banks, and telco companies truly understand their customers, resulting in the sustainable growth of their businesses’ profitability.
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WRM Media Ltd
Web Development · Web Design · IT Services
WRM-Media specialises in email marketing and lead generation services.
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EE
Web Development · Web Design · IT Services
EE, part of BT Group, is the largest and most advanced mobile communications company in the UK, delivering mobile and fixed communications services to consumers.
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Data Allies
Web Development · Web Design · IT Services
Data Allies is a consulting and services company located in the United Kingdom, the Netherlands, and Bulgaria, which combines experience in JIRA support and with AI for JIRA.
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Virtual Clarity
Web Development · Web Design · IT Services
With a focus on digital transformation and implementing the best cloud systems, Virtual Clarity makes IT-as-a-Service happen in the largest, most critical environments by aligning…
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Digital Craftsmen
Web Development · Web Design · IT Services
Digital Craftsmen is dedicated to helping organizations migrate to and operate safely and productively in the cloud.
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The Marketing Centre
Web Development · Web Design · IT Services
The Marketing Centre is the UK’s number one provider of part-time proven Marketing Directors to ambitious businesses.
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OnApp
Web Development · Web Design · IT Services
OnApp makes cloud fast, easy & profitable for Telcos, MSPs & other cloud service providers.
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Strategic Blue
Web Development · Web Design · IT Services
Founded in 2010, Strategic Blue is helping the world’s cloud buyers get a better deal by accelerating and optimizing the procurement of cloud resources.
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Ranyart Systems
Mobile App Development · Web Development · Web Design
Ranyart Systems is a highly experienced software development company based in Northern Ireland, working predominantly with Microsoft technologies.
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Inspire Corporation Limited
Web Development · Web Design · IT Services
Inspire is an 8-year-old Technology talent business that has the clear and defined capability within the Physical and Virtual Infrastructure Technology stack.
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Bell Integration
Web Development · Web Design · IT Services
Bell Integration is a leading IT Services and Consulting business, dedicated to making the difficult feel easy for our customers.
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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

BCN Group Ltd

Outsource Accelerator

Civica

Banntech Ltd

Brigantia Partners Limited

XMA

Instem

Ability2code Ltd

Trunomi

Yoti Ltd

Virgin Media

Daisy Corporate Services

Exponea

WRM Media Ltd

EE

Data Allies

Virtual Clarity

Digital Craftsmen

The Marketing Centre

OnApp

Strategic Blue

Ranyart Systems

Inspire Corporation Limited

Bell Integration