Top ASP.NET Application Development Companies in the UK

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    Targets we’ve achieved:
    Increased US Software Development Company's annually acquired clients by 400% *
    Generated 50+ business opportunities for UK Architecture & Design Services Provider *
    Reduced cost per lead by over 6X for Dutch Event Technology Company *
    Reached out to 13,000 target prospects and generated 400 opportunities for Swiss Sports Tech Provider *
    Boosted conversion rate of Ukrainian IT Company by 53.6% *
    Increased US Software Development Company's annually acquired clients by 400% *
    Generated 50+ business opportunities for UK Architecture & Design Services Provider *
    Reduced cost per lead by over 6X for Dutch Event Technology Company *
    Reached out to 13,000 target prospects and generated 400 opportunities for Swiss Sports Tech Provider *
    Boosted conversion rate of Ukrainian IT Company by 53.6% *
    Increased US Software Development Company's annually acquired clients by 400% *
    Generated 50+ business opportunities for UK Architecture & Design Services Provider *
    Reduced cost per lead by over 6X for Dutch Event Technology Company *
    Reached out to 13,000 target prospects and generated 400 opportunities for Swiss Sports Tech Provider *
    Boosted conversion rate of Ukrainian IT Company by 53.6% *
    Increased US Software Development Company's annually acquired clients by 400% *
    Generated 50+ business opportunities for UK Architecture & Design Services Provider *
    Reduced cost per lead by over 6X for Dutch Event Technology Company *
    Reached out to 13,000 target prospects and generated 400 opportunities for Swiss Sports Tech Provider *
    Boosted conversion rate of Ukrainian IT Company by 53.6% *
    Increased US Software Development Company's annually acquired clients by 400% *
    Generated 50+ business opportunities for UK Architecture & Design Services Provider *
    Reduced cost per lead by over 6X for Dutch Event Technology Company *
    Reached out to 13,000 target prospects and generated 400 opportunities for Swiss Sports Tech Provider *
    Boosted conversion rate of Ukrainian IT Company by 53.6% *
    Increased US Software Development Company's annually acquired clients by 400% *
    Generated 50+ business opportunities for UK Architecture & Design Services Provider *
    Reduced cost per lead by over 6X for Dutch Event Technology Company *
    Reached out to 13,000 target prospects and generated 400 opportunities for Swiss Sports Tech Provider *
    Boosted conversion rate of Ukrainian IT Company by 53.6% *
    AI Summary
    Max Mykal
    Co-Founder @ Lengreo

      Looking for the best ASP.NET development companies in the UK? Choosing the right partner can make all the difference when building scalable, reliable, and high-performing web applications. The top UK companies not only write clean, efficient code-they understand your business goals, users, and the kind of online experience that truly matters.

      1. LenGreo

      1. LenGreo

      We work with businesses to navigate the digital landscape, focusing on creating strategies that fit each client’s unique needs. Our approach combines different aspects of digital marketing, from SEO and social media to paid advertising and demand generation. By integrating into client teams, we aim to maintain smooth communication and ensure our work aligns with ongoing business goals. Our team provides scalable ASP.NET development services in Central Europe and the UK.

       

      Key Highlights:

      • Focus on tailored digital marketing strategies
      • Integration into client teams for closer collaboration
      • Emphasis on lead generation and appointment setting
      • Open and transparent communication
      • Possibility of in-person meetings in Central Europe

       

      Services:

      • B2B digital marketing strategy and consulting
      • Lead generation and appointment setting
      • Search engine optimization (SEO)
      • Social media and content marketing
      • Paid advertisement services
      • Demand generation
      • Website development services

       

      Contact and Social Media Information:

      • clutch logo
      • trustpilot logo
      Our cases
      SEO for BIM & VDC Services Provider
      SEO for BIM & VDC Services Provider
      PPC For Adult Content Platform
      PPC For Adult Content Platform
      Biological Age Blood Testing Kit
      Biological Age Blood Testing Kit
      2. 200OK

      2. 200OK

      200OK Solutions started with Microsoft SharePoint and has grown into a full-stack development company, handling web, mobile, DevOps, and support services. They split their operations between London and India, giving them both local contact and global technical expertise. Their .NET solutions are flexible enough for custom apps or full-scale digital transformations.

       

      Key Highlights:

      • Established in 2011
      • Expertise in Microsoft SharePoint and .NET solutions
      • Global presence with offices in the UK and India

       

      Services:

      • Web and mobile development
      • Full-stack application development
      • Application maintenance and support
      • DevOps services
      • Dedicated Team support

       

      Contact Information:

      • Website: 200oksolutions.com
      • E-mail: info@200oksolutions.com
      • Facebook: www.facebook.com/people/200OK-Solutions
      • Twitter: x.com/200ok_Solutions
      • LinkedIn: www.linkedin.com/company/200ok-solutions
      • Instagram: www.instagram.com/200ok_solutions
      • Address: 63/66 Hatton Garden, Fifth Floor, Suite 23 London, EC1N 8LE
      • Phone: +44 20 3372 4627

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        3. Ranosys

        3. Ranosys

        Ranosys works on eCommerce, product engineering, and digital transformation. They partner with platforms like Salesforce, Adobe, Shopify Plus, and Microsoft to build .NET apps. Their team has offices around the world-including the UK, Singapore, and the US-so they can scale solutions for almost any market.

         

        Key Highlights:

        • Global presence with offices in Singapore, UK, USA, and Middle East
        • Focus on ASP.NET development and digital consulting
        • Partnerships with major technology platforms
        • Transparent work methodologies

         

        Services:

        • ASP.NET web and app development
        • Digital transformation support
        • eCommerce and product engineering solutions
        • Project management and technical consulting

         

        Contact Information:

        • Website: www.ranosys.com
        • E-mail: sales@ranosys.com
        • Facebook: www.facebook.com/ranosys
        • Twitter: x.com/ranosys
        • LinkedIn: www.linkedin.com/company/ranosys
        • Instagram: www.instagram.com/ranosys
        • Address: 318 Feltham Hill Road, Ashford, Surrey, UK, TW15 1LW
        • Phone: +44 20 8144 8551
        4. Space Stem

        4. Space Stem

        Space Stem is all about modernizing businesses with software. They use Microsoft tech, including ASP.NET, to build flexible apps and solve tricky IT problems. Their team is mainly based in India, but they work with clients worldwide. They blend tech skills with industry know-how, making complex projects more manageable.

         

        Key Highlights:

        • Team focused on problem-solving and innovation
        • Nearly a decade of ASP.NET development experience
        • Expertise in Microsoft technologies
        • Customized solutions for complex IT challenges

         

        Services:

        • ASP.NET web application development
        • Custom software solutions
        • IT consulting and problem-solving
        • Application maintenance and optimization

         

        Contact Information:

        • Website: www.spacestem.com
        • E-mail: info@spacestem.com
        • Facebook: www.facebook.com/spacestemit
        • Twitter: x.com/spacestem
        • LinkedIn: in.linkedin.com/company/spacestem
        • Instagram: www.instagram.com/spacestem.it
        • Address: 9, Little Portland Street, London, W1W 7JF, United Kingdom.
        • Phone: +44 1509357224
        5. iQlance

        5. iQlance

        iQlance works on various software projects, including ASP.NET apps. They focus on understanding your needs and delivering solutions that actually fit your business. From design to testing to ongoing support, they’re hands-on at every stage.

         

        Key Highlights:

        • Development of scalable software solutions
        • Focus on aligning technology with business goals
        • Support for multiple stages of software development
        • Emphasis on collaboration and adaptability

         

        Services:

        • ASP.NET application development
        • Web and mobile application development
        • Software maintenance and support
        • Custom software solutions

         

        Contact Information:

        • Website: www.iqlance.com
        • E-mail: info@iqlance.com
        • Facebook: www.facebook.com/iQlance
        • Twitter: x.com/iqlance
        • LinkedIn: www.linkedin.com/company/iqlance-solutions
        • Instagram: www.instagram.com/iQlance
        • Address: 17250 Dallas Pkwy Dallas, Tx 75248, USA
        • Phone: +1 469 793 98 37
        6. GoodCore

        6. GoodCore

        GoodCore has been providing software development services since 2005, with a focus on helping businesses implement technology solutions that are operationally and strategically effective. They work on business-critical systems and develop applications that support ongoing business growth and efficiency. They also develop ASP.NET apps.

        Their approach combines technical expertise with process-driven development. GoodCore works with clients to deliver solutions that are flexible and scalable, adapting to evolving business needs while addressing complex software challenges.

         

        Key Highlights:

        • Established in 2005
        • Focus on business-critical software
        • Combines engineering expertise with process-driven development
        • Supports scalable and adaptable solutions

         

        Services:

        • ASP.NET application development
        • Business-critical software solutions
        • Web and mobile application development
        • Software maintenance and ongoing support

         

        Contact Information:

        • Website: www.goodcore.co.uk
        • E-mail: contact@goodcore.co.uk
        • Facebook: www.facebook.com/goodcoresoftware
        • LinkedIn: www.linkedin.com/company/goodcore-software
        • Address: Airport House, Purley Way, Croydon CR0 0XZ
        • Phone: 020 8781 6903
        7. Devstree IT Solutions Limited UK

        7. Devstree IT Solutions Limited UK

        Devstree provides IT services including AR/VR, mobile, and ASP.NET apps development. They’re headquartered in India but now have a UK office, which makes communication and local support easier. Their approach is practical, with no cutting corners.

         

        Key Highlights:

        • Founded in 2013
        • UK office established in 2024
        • Expertise in AR/VR, game, and mobile app development
        • Teams across India and the UK

         

        Services:

        • Mobile application development
        • AR/VR development
        • Game development
        • IT consulting and support

         

        Contact Information:

        • Website: www.devstree.uk
        • E-mail: info@devstree.uk
        • Facebook: www.facebook.com/devstreeitsolutionsuk
        • Twitter: x.com/DevstreeUK
        • LinkedIn: www.linkedin.com/company/devstreeuk
        • Instagram: www.instagram.com/devstree.uk
        • Address: 8, Overing Close, Leicester LE47QS, UK
        • Phone: +44 7404 650992
        8. Hidden Brains

        8. Hidden Brains

        Hidden Brains is a global company building web and mobile apps, including ASP.NET.

        They combine technical skills with business strategy, focusing on practical solutions that fit industry needs. Their culture encourages creativity and problem-solving.

         

        Key Highlights:

        • Global presence in web and mobile development
        • Encourages innovative and creative solutions
        • Focus on industry-specific approaches
        • Combines business strategy with technical execution

         

        Services:

        • Web application development
        • Mobile application development
        • Custom software solutions
        • IT consulting and strategy

         

        Contact Information:

        • Website: www.hiddenbrains.co.uk
        • E-mail: biz@hiddenbrains.com
        • Facebook: www.facebook.com/HiddenBrains
        • Twitter: x.com/HiddenBrains
        • LinkedIn: www.linkedin.com/company/hiddenbrains-infotech-pvt-ltd
        • Address: Unit P Hunting Gate, East Portway, Andover, Hampshire, SP10 3ER, UK
        • Phone: +44 (0)20-7993-2188
        9. Ezulix

        9. Ezulix

        Ezulix operates as a software development company in the UK, focusing on automating business processes and delivering AI-driven solutions. They provide custom software designs and work to reduce operational workload through business intelligence tools and smart automation systems. They also develop ASP.NET apps. 

        Their teams collaborate closely with clients to understand business challenges and deliver practical, tailored solutions. They focus on improving efficiency and streamlining processes while developing applications that fit each organization’s needs.

         

        Key Highlights:

        • UK-based software development company
        • Offers AI-driven business intelligence solutions
        • Provides custom software design for different industries
        • Focus on reducing operational workload

         

        Services:

        • Custom software development
        • Business process automation
        • AI and business intelligence solutions
        • Web and mobile application development

         

        Contact Information:

        • Website: ezulix.co.uk
        • E-mail: info@ezulix.co.uk
        • Facebook: www.facebook.com/ezulixsoftware
        • Twitter: x.com/ezulix_software
        • LinkedIn: www.linkedin.com/company/ezulix-software-private-limited
        • Instagram: www.instagram.com/ezulix
        • Address: 71-75 Shelton St, London WC2H 9JQ, United Kingdom
        • Phone: +44 7956982975
        10. FastFWD

        10. FastFWD

        FastFWD is all about collaboration and clear processes. Their teams value communication, experimentation, and quality, making sure every project meets client expectations. They emphasize teamwork and knowledge sharing to deliver practical solutions. Develop ASP.NET applications and others.

         

        Key Highlights:

        • Values teamwork and collaboration
        • Structured processes for project development
        • Emphasis on experimentation and quality
        • Focus on aligning goals with client needs

         

        Services:

        • Software development
        • Project strategy and consulting
        • Web and mobile applications
        • Quality assurance and testing

         

        Contact Information:

        • Website: www.fastfwd.com
        • E-mail: website@fastfwd.com
        • Address: Falcon Works House, 40 Regent Place, Birmingham, B1 3NN, United Kingdom
        • Phone: +44 121 236 8007

        Conclusion

        ASP.NET is still a solid choice if you want reliable, adaptable software. The key is finding a team that actually understands your goals. Across the UK, developers focus on collaboration, clear communication, and solving real-world problems. It’s not about picking the “best” company on paper-it’s about finding the right fit for your project and long-term plans.

        AI Summary