Top .NET Developers in the United Kingdom
From London’s fintech corridor to Cambridge’s R&D labs and Edinburgh’s data science scene, the United Kingdom is a powerhouse for enterprise-grade .NET engineering. Whether you’re modernizing a legacy platform, building APIs with ASP.NET Core, or scaling on Microsoft Azure, the right U.K. partner can accelerate delivery with strong governance and security.
Clutch helps you find trusted .NET developers in the United Kingdom through verified client reviews, detailed service profiles, and portfolio evidence. Filter by budget, location, tech stack, and industry focus to zero in on a team that fits your roadmap and compliance needs (e.g., ISO 27001, Cyber Essentials, NHS DSPT). Start with these curated directories:
• .NET Developers in Manchester
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Featured
What are Featured Providers?
$25,000+$25 - $49 / hr50 - 249Serves United KingdomServices provided
Focus Areas
See all 62 projectsLeobit is a custom software development company known for its expertise in tailored and full-stack software development solutions. Reviews reflect a 100% satisfaction rate, with clients praising their technical acumen, timely project management, and ability to transform complex business needs into robust software solutions. Leobit is commended for its strategic partnership approach and effective communication, as mentioned in approximately 70% of reviews.
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UndisclosedUndisclosed10 - 49Tollerton, England
Services provided
Focus Areas
Totemic IT is a branding agency in Tollerton, England. The team specializes in Branding and Email Marketing.
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List of the Top 15 United Kingdom .NET Development Companies
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$25,000+$50 - $99 / hr250 - 999London, England
Ability to deliver
39.1/40.019.2/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
25% Custom Software Development42% .NET10% Web Development65% Other -
$10,000+$25 - $49 / hr250 - 999London, England
Ability to deliver
38.3/40.019.6/20 Reviews9.1/10 Clients & Experience9.6/10 Market PresenceService focus
55% Custom Software Development50% .NET45% Other -
$25,000+< $25 / hr1,000 - 9,999London, England
Ability to deliver
37.6/40.017.8/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
50% Custom Software Development35% .NET20% Web Development30% Other -
$50,000+$50 - $99 / hr1,000 - 9,999London, England
Ability to deliver
39.8/40.020/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
15% Custom Software Development20% .NET10% Web Development75% Other -
$50,000+$25 - $49 / hr1,000 - 9,999London, England
Ability to deliver
36.6/40.016.8/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
30% Custom Software Development70% .NET70% Other -
$25,000+$50 - $99 / hr1,000 - 9,999London, England
Ability to deliver
35.8/40.015.8/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
50% Custom Software Development35% .NET50% Other -
$50,000+$50 - $99 / hr250 - 999London, England
Ability to deliver
39.8/40.020/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
20% Web Development80% Other -
$50,000+$150 - $199 / hr250 - 999London, England
Ability to deliver
40/40.020/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
20% Custom Software Development13% .NET20% Web Development60% Other -
$50,000+$50 - $99 / hr50 - 249London, England
Ability to deliver
35.9/40.018.4/20 Reviews10/10 Clients & Experience7.5/10 Market PresenceService focus
30% Custom Software Development70% .NET10% Web Development60% Other -
$25,000+$25 - $49 / hr1,000 - 9,999London, England
Ability to deliver
36.8/40.017/20 Reviews10/10 Clients & Experience9.8/10 Market PresenceService focus
15% Custom Software Development35% .NET85% Other -
$25,000+$25 - $49 / hr50 - 249London, England
Ability to deliver
36.7/40.017/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
40% Custom Software Development50% .NET15% Web Development45% Other -
Undisclosed$150 - $199 / hr250 - 999London, England
Ability to deliver
36.4/40.017.2/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
20% Custom Software Development80% .NET80% Other -
$50,000+$50 - $99 / hr250 - 999London, England
Ability to deliver
38.2/40.018.6/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
60% Custom Software Development20% .NET5% Web Development35% Other -
$25,000+$25 - $49 / hr250 - 999London, England
Ability to deliver
39.6/40.019.6/20 Reviews10/10 Clients & Experience10/10 Market PresenceService focus
40% Web Development60% Other -
$25,000+$50 - $99 / hr50 - 249London, England
Ability to deliver
39.1/40.019.6/20 Reviews10/10 Clients & Experience9.5/10 Market PresenceService focus
40% Custom Software Development20% .NET20% Web Development40% Other -
$10,000+$25 - $49 / hr50 - 249London, England
Ability to deliver
34.9/40.015.8/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
40% Custom Software Development60% .NET10% Web Development50% Other -
$10,000+$100 - $149 / hr50 - 249London, England
Ability to deliver
34.9/40.015.6/20 Reviews9.7/10 Clients & Experience9.6/10 Market PresenceService focus
35% Custom Software Development58% .NET35% Web Development30% Other -
Undisclosed$25 - $49 / hr250 - 999London, England
Ability to deliver
37.1/40.017.2/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
10% Custom Software Development100% .NET90% Other -
$5,000+$25 - $49 / hr50 - 249London, England
Ability to deliver
39.6/40.020/20 Reviews10/10 Clients & Experience9.6/10 Market PresenceService focus
40% Custom Software Development10% .NET40% Web Development20% Other -
$50,000+$50 - $99 / hr1,000 - 9,999London, England
Ability to deliver
38.7/40.019.4/20 Reviews10/10 Clients & Experience9.3/10 Market PresenceService focus
20% Custom Software Development10% .NET80% Other -
$25,000+$25 - $49 / hr50 - 249London, England
Ability to deliver
34.7/40.016.2/20 Reviews10/10 Clients & Experience8.5/10 Market PresenceService focus
20% Custom Software Development60% .NET20% Web Development60% Other -
$10,000+$150 - $199 / hr10 - 49Bristol, England
Ability to deliver
35.4/40.016.2/20 Reviews10/10 Clients & Experience9.2/10 Market PresenceService focus
25% Web Development75% Other -
$1,000+$25 - $49 / hr1,000 - 9,999London, England
Ability to deliver
37.4/40.018/20 Reviews9.6/10 Clients & Experience9.8/10 Market PresenceService focus
10% Custom Software Development10% .NET15% Web Development75% Other -
$100,000+$50 - $99 / hr1,000 - 9,999London, England
Ability to deliver
36.1/40.016.2/20 Reviews10/10 Clients & Experience9.9/10 Market PresenceService focus
16% Custom Software Development25% .NET84% Other -
$5,000+$100 - $149 / hr10 - 49Great Baddow, England
Ability to deliver
32.6/40.016.4/20 Reviews8.6/10 Clients & Experience7.6/10 Market PresenceService focus
50% Custom Software Development100% .NET5% Web Development45% Other -
$25,000+$100 - $149 / hr10 - 49Manchester, England
Ability to deliver
32.8/40.015.6/20 Reviews10/10 Clients & Experience7.2/10 Market PresenceService focus
40% Custom Software Development100% .NET10% Web Development50% Other -
$10,000+$50 - $99 / hr10 - 49Bedford, England
Ability to deliver
34.6/40.016.6/20 Reviews10/10 Clients & Experience8/10 Market PresenceService focus
25% Custom Software Development100% .NET75% Other -
$25,000+$50 - $99 / hr50 - 249Salford, England
Ability to deliver
37.5/40.017.8/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
55% Custom Software Development10% .NET45% Other -
$10,000+$25 - $49 / hr250 - 999London, England
Ability to deliver
38.1/40.018.4/20 Reviews10/10 Clients & Experience9.7/10 Market PresenceService focus
10% Custom Software Development14% .NET10% Web Development80% Other -
$5,000+< $25 / hr250 - 999London, England
Ability to deliver
34.1/40.016.4/20 Reviews8.5/10 Clients & Experience9.2/10 Market PresenceService focus
10% Custom Software Development40% .NET10% Web Development80% Other
U.K. .NET Development FAQs
A U.K.-based .NET development partner brings proximity to major enterprise hubs (London, Manchester, Birmingham) and deep alignment with the Microsoft ecosystem. Many teams hold Microsoft Solutions Partner designations, Azure certifications, and established practices in DevOps, CI/CD, and cloud security.
Moreover, local agencies also understand local compliance and procurement frameworks (e.g., GDPR, Open Banking/PSD2, FCA guidance, NHS DSPT), which reduces risk for regulated builds. Finally, shared time zones and fluent English communication help speed decision-making for agile sprints and stakeholder workshops.
Generally, rates vary depending on factors like location, seniority, and engagement model. Most Clutch-listed U.K.-based .NET teams charge:
- Hourly rates: £60 – £120
- Day rates for contractors: £400 – £900
- Project budgets: £25,000 – £250,000+, depending on scope, integrations, and security needs
It’s worth noting that London-based providers and highly specialized teams command the higher end. Discovery-led, fixed-scope projects are often priced higher than time-and-materials, but they can control change risk and accelerate sign-off.
Local .NET development agencies commonly support a broad range of markets, reflecting the scale and diversity of the United Kingdom’s business landscape. Many specialists have experience with verticals like:
- Financial services and fintech (Open Banking, payments, AML/KYC)
- Government and public sector (G-Cloud familiarity, accessibility, security)
- Health and life sciences (NHS integrations, data privacy, audit trails)
- E-commerce and retail (headless commerce, order management, ERP)
- Media and telecom (high-traffic content platforms, streaming)
- Manufacturing, logistics, and energy (IoT, SCADA integrations, field ops)
Additionally, many teams pair ASP.NET Core microservices with Azure PaaS (App Service, Functions, Service Bus) and modern front ends (React, Blazor) to meet sector-specific SLAs.
- Verify technical fit — ASP.NET Core, Azure architecture, microservices, API-first design, and secure data handling. Ask for architecture diagrams and sample pipelines.
- Check credentials — Microsoft Solutions Partner status, Azure certs, ISO 27001, Cyber Essentials Plus, sector-specific compliance.
- Review delivery maturity — Agile ceremonies, Jira/Azure DevOps usage, automated testing, observability, and release governance.
- Evaluate case studies — Look for U.K.-relevant references, measurable outcomes, and integrations similar to yours.
- Align on engagement — Fixed-price vs. T&M, code ownership, SLAs, onshore/nearshore blend, and clear exit criteria.
- Speak to references — Use Clutch reviews to validate responsiveness, transparency, and post-launch support.
Maximize Clutch’s data-driven resources to gain crucial insights to help make an informed decision. Shortlist the top two or three firms that meet your initial assessment, then schedule a discovery to discuss your project in detail and gauge their capabilities.
- Vague scoping and estimates, or reluctance to run a paid discovery
- No clarity on source code ownership, branching strategy, or CI/CD
- Limited security posture (no ISO 27001/Cyber Essentials, weak data protection)
- Overpromising timelines for complex integrations or legacy rewrites
- Outdated stack focus (.NET Framework only, no ASP.NET Core/Azure fluency)
- Inability to explain Azure cost drivers or provide observability plans
- Few U.K. references or no experience with local regulatory frameworks
While some red flags can seem inconsequential or feel like “just a trade-off”, underestimating them can lead to headaches. Make sure you avoid these warning signs when choosing the right .NET team for your needs.