Top 100 ASP.NET Developers in the United Kingdom

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Top 100 ASP.NET Developers in the United Kingdom

December 2022

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Microsoft developed ASP.NET in 2002 as an open-source and server-side web development framework. 

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List of the Best United Kingdom ASP Development Companies

  • 1
    • Scheduling

      4.7
    • Quality

      4.8
    • Cost

      4.7
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $50,000+
    • 250 - 999 employees
    • London, United Kingdom

    One Beyond is a bespoke software development and digital transformation company headquartered in London with additional engineering centers in Madrid (Spain), Budapest & Szeged (Hungary) and Bucharest (Romania). Across international locations, they have a team of more than 350 individuals providing custom software, web and mobile application development and large- scale digital transformation to a diverse clientele.They support large established businesses, nonprofits, government organizations, and VC-funded startups

    Clients

    • Smith & Nephew
    • GAIL's Bakery
    • Costa Express
    • Pearson

    Industries

    Notable Project

    One Beyond (formerly DCSL GuideSmiths) developed a cloud-based web app for a contract company. The digital tool lets users define large construction projects and streamlines the procurement process for contractors.

    “Whenever there was a problem, they helped us come up with a solution.”

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  • 2
    • $25,000+
    • 50 - 249 employees
    • Croydon, United Kingdom

    Founded in 2005 and headquartered in Croydon, UK, GoodCore Software specializes in bespoke software development. With a team of about 50 employees, the company offers web and mobile app development to startups and established businesses alike. Engagement options include fixed-cost and dedicated development teams.

    Clients

    • Printed Music Licensing
    • Weight Loss Resources
    • GC Business Finance
    • XTracked Deliveries

    Industries

    Notable Project

    GoodCore Software developed a custom shopping cart configurator that designed product models and delivered quotes. They built the tool using PHP, Linux, CodeIgniter, and a MySQL database. 

    "Their communication and understanding of our requirements were outstanding."

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  • 3
    • Scheduling

      4.3
    • Quality

      4.7
    • Cost

      4.2
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 250 - 999 employees
    • London, United Kingdom

    Softwire is a digital design, engineering and support agency, with offices in London, Cambridge and Manchester. Employing over 200 engineers we create bespoke digital software, mobile apps, and offer strategic IT consulting for some of the UK’s leading brands including the BBC, David Lloyd Clubs, Channel 5 and many large Government Departments.

    Clients

    • The BBC
    • David Lloyd Clubs
    • RSA
    • The Cabinet Office

    Industries

    Notable Project

    A property portal company has collaborated with Softwire for custom software development using React, Java, and more. They manage product research, MVP creation, launching process, and various optimization. 

    "They operate independently and raise issues only when necessary."

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  • 4
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 10 - 49 employees
    • London, United Kingdom

    Core Blue Ltd is a software engineering company based in London with an office in Plymouth, U.K. The company, founded in 2015, has a team of less than ten that provides custom software development, mobile app development, web development, and IoT development services to various companies.

    Clients

    • Bank of Kigali
    • Kuoni
    • SAP
    • PayPoint

    Industries

    Notable Project

    CoreBlue has developed a website for a business solutions company. They have migrated an existing platform into a new environment, led testing efforts, and provided ongoing support.

    "CoreBlue’s maturity and accreditations in security and quality give us the confidence to pick them as our partner."

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  • 5
    • Scheduling

      4.5
    • Quality

      4.6
    • Cost

      4.3
    • NPS

      4.6
    Read Full Reviews on Clutch Visit Site
    • $50,000+
    • 50 - 249 employees
    • Sutton,

    Geeks is a software development company in London. Founded in 2007, Geeks' team of 85 specializes in custom software development, web development, and mobile app development, primarily for midmarket clients in media and govenment.

    Clients

    • BBC
    • EasyJet
    • Euromoney
    • Mitie

    Industries

    Notable Project

    A real estate brokerage hired Geeks Ltd for custom software development services. The team handled the client's intranet support services, CRM, document processing, and mobile optimization.

    "We were impressed by their knowledge, communication style, and professionalism."

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  • 6
    • $10,000+
    • 50 - 249 employees
    • London, United Kingdom

    Founded in 2010, Magora is a 50+ team of web and mobile app designers and developers based in London. Whether it’s B2B or B2C, the firm creates bespoke software that integrates with existing business solutions to enable user-centered interaction and scalable software architecture.

    Clients

    • Danone
    • Unilever
    • Toyota
    • Royal College of Art

    Industries

    Notable Project

    Magora Systems has helped with DevOps and worked on the main core system for a mobility solutions company. They’ve also built systems from scratch using PHP, JavaScript, and relational databases hosted on AWS.

    “They’re a stable and reliable team.”

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  • 7
    • $10,000+
    • 50 - 249 employees
    • London, United Kingdom

    Influential Software is a software development firm in London, United Kingdom; Maidstone, United Kingdom and Glasgow, United Kingdom. The firm focuses on custom software development, web development, BI & big data consulting & SI, IT managed services, and more and has a midsize team.The firm was launched in 1993.

    Clients

    • Deloitte
    • American Express
    • London Stock Exchange
    • Pret a Manger

    Industries

    Notable Project

    Influential Software developed a Sharepoint solution to improve a children's charity organization's data management and delivered an interactive wiki. 

    "We were very impressed with Influential for the positive meetings and collaboration between our two companies."

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  • 8
    • Scheduling

      4.6
    • Quality

      4.8
    • Cost

      4.7
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $50,000+
    • 10 - 49 employees
    • Cheshire , United Kingdom

    CSI Media is an award-winning web and software development company with 23 years’ experience in delivering bespoke, advanced solutions for mid-market and enterprise-level companies across the UK. They combine inspiring design with the latest tech to deliver world-class digital solutions including CMS websites (Umbraco, Sitecore & Shopify), web applications, e-commerce platforms, business portals, and software systems and, since 1998, they have developed over 200 custom platforms for companies across the U.K.

     

    Clients

    • Motor Trade Delivery
    • The Priory Group
    • Hovertravel
    • The Cormar Carpet Company

    Industries

    Notable Project

    A children's sports organization engaged with CSI Media for their custom software development services. The team built a mobile-friendly web app using Umbraco and is looking to develop a mobile version soon.

    "They really are a passionate team, and you can get that right away when you meet them."

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  • 9
    • $5,000+
    • 50 - 249 employees
    • London, United Kingdom

    Transputec, a midsize cybersecurity company, is located in Wembley, United Kingdom. They focus on cybersecurity, IT managed services, and custom software development and were launched in 1984.

    Industries

    Notable Project

    A media and events company was looking to revamp their IT infrastructure, so they engaged with Transputec Ltd to provide them with a full audit of their entire system.

    "They came up with good solutions at a reasonable cost and delivered their tasks with minimal problems."

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  • 10
    • $10,000+
    • 50 - 249 employees
    • Eashing, United Kingdom

    BrightStarr was founded in 2006 and is a custom software development company. Headquartered in Seattle, WA with additional offices in the UK and New York, the team of 126 also offers web and mobile app development and productivity consulting to help clients streamline their internal business processes.

    Clients

    • Abt Associates
    • Adidas
    • ARCADIS
    • Barclay's

    Industries

    Notable Project

    BrightStarr helped launch and promote a customized, out-of-the-box SharePoint 2010 solution. The team developed Web parts to enhance the intranet and improved content management.

    "What was really impressive was their hybrid model of being a creative firm and a development firm."

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  • 11
    • $25,000+
    • 10 - 49 employees
    • London , United Kingdom

    AVAMAE is a software solutions agency run by a team of fewer than 50 professionals founded in 2011. Based in London, the company offers custom software, web, and mobile app development services for small and medium-sized businesses from various industries, such as business services, financial services, and health care.

    Clients

    • BetDSI
    • Strengthscope
    • Clevry
    • Buyfair

    Industries

    Notable Project

    AVAMAE Software Solutions Ltd built a web-based assessment platform for a psychometric provider. They continue to manage and update the system, adding new functionalities like questionnaires and reports. 

    "Their adaptability and ability to follow through with their commitments is quite impressive."

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  • 12
    • $10,000+
    • 10 - 49 employees
    • Wimborne, United Kingdom

    Ballard Chalmers is a software development company based just south of London. Founded in 2005, their team provides custom software development, modernisation and integration, as well as support and IT Managed Services.

    Clients

    • Apex
    • Virgin Atlantic Airways
    • Ipes
    • Good Energy

    Industries

    Notable Project

    Ballard Chalmers revamped and continues to support a SharePoint application with over 50,000 records, restructuring the database and customizing reporting.

    "They're good about keeping us up to date and moving things forward."

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  • 13
    • Scheduling

      4.9
    • Quality

      5.0
    • Cost

      4.8
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 10 - 49 employees
    • London , United Kingdom

    Atom CTO is a software company based in London with more than 10 experts. Founded in 2017, they offer IT strategy consulting, application management and support, and business consulting solutions for both small and medium-sized companies.

    Clients

    • Accelerated Payments Limited

    Industries

    Notable Project

    Atom CTO provides business consulting services to a startup. They help identify funding opportunities, and they strategize how to increase sales. They also help determine the client's right target market.

    "Their work has helped me pivot many times to set myself up for success."

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  • 14
    • Scheduling

      4.0
    • Quality

      4.5
    • Cost

      4.5
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • Undisclosed
    • 2 - 9 employees
    • Bollington, United Kingdom

    ACS is a software house based in Bollington, England, and founded in 2099. Their team of no more than 10 specializes in custom software development, mobile app development, and big data consulting solutions for clients in the fields of hospitality and healthcare.

    Clients

    • Common Goal
    • The Manchester United Supporters Trust
    • Fifa
    • Sony Music

    Industries

    Notable Project

    ACS developed a custom site with transaction capabilities for a nonprofit. Currently, they continue to provide support on the client's backend process, ensuring that the content management and CRM work well.

    "They’re really making an effort to get to the bottom of our challenges."

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  • 15
    • $5,000+
    • 2 - 9 employees
    • Northampton, United Kingdom

    Full Metal Software is a bespoke software development agency located in Northampton, England. Founded in 2004, they have three employees specializing in full stack web development and innovative business solutions for small and midmarket companies, typically in business services, finance, and healthcare. Services include project management, code updating, CMS support, software development, and outsourcing.

    Clients

    • YourGene Health
    • Pastdrives Ltd
    • Zanzibar Amber Resort

    Industries

    Notable Project

    A managed IT service provider hired Full Metal Software to transfer their software into a cloud-based server and create new test and UAT areas. 

    "Full Metal handled the project brilliantly and continue to deliver great support."

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  • 16
    • $10,000+
    • 2 - 9 employees
    • Bristol, United Kingdom

    Blue Sparrow Apps is a development agency based in Bristol, England, and founded in 2015. With fewer than 10 employees, they specialize in mobile app and custom software development solutions for both small and medium-sized businesses.

    Clients

    • FanHub
    • Coeus Software

    Notable Project

    A football enthusiasts organization partnered with Blue Sparrow Apps to develop a mobile app. The solution will gamify fans' behavior as they follow their favorite football team.

    "They really care about their work and bringing our vision to life."

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  • 17
    • Scheduling

      4.8
    • Quality

      5.0
    • Cost

      4.8
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • Cambridge, United Kingdom

    Founded in 2004, Computer Conquest is an IT managed services company. The company offers IT managed services, cloud consulting & SI, custom software development, IT strategy consulting, and more and has a small team. The company is in Cirencester, United Kingdom.

    Clients

    • The Woodhouse Partnership
    • Brickflow
    • Huma Business Intelligence
    • Misys / Finastra

    Industries

    Notable Project

    An international bank was having performance issues with one of their systems, so they hired Computer ConQuest (CCQ) for IT support. The team provided additional coding to resolve the problem.

    “They met all deadlines, and the quality of their deliverables was very professional.”

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  • 18
    • $25,000+
    • 10 - 49 employees
    • London, United Kingdom

    Silicon Reef are a SharePoint development & Microsoft 365 solutions agency. Founded in 2016, they are located in the United Kingdom with offices in London, Chester, and Bournemouth. They offer a range of services from consultancy, campaign-based web or app development, and front-end creative. They also offer full-blown migration, strategic road-mapping, and full-service development partnerships and partner with medium-sized to enterprise clients. 

    Clients

    • Unilever
    • Asahi
    • Anglo American
    • SEGA

    Notable Project

    Silicon Reef provided consulting and training services for a consulting group looking to strengthen their skills in Office 365.

    "The interaction with Silicon Reef is faultless."

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  • 19
    • $10,000+
    • 50 - 249 employees
    • London, United Kingdom

    BGO Software is a Bulgarian software design company that has offices in Sofia, Plovdiv, and London, U.K. Established in 2008, the company employs a team of 73 who specialize in software and mobile app development. 

    Industries

    Notable Project

    BGO Software provides ongoing technical and development services for live products. They work with existing databases and code to add new features, make enhancements, and expand functionality.

    “The quality and personalized level of service BGO Software delivers is notably special.”

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  • 20
    • Scheduling

      4.5
    • Quality

      5.0
    • Cost

      4.5
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 2 - 9 employees
    • Fleet, United Kingdom

    Ei Square® is a Fleet, United Kingdom-based big data analytics company. The firm focuses on BI & big data consulting & SI, custom software development, and IT staff augmentation and is small.The firm was founded in 2019.

    Clients

    • Fintech
    • Social Housing

    Industries

    Notable Project

    Ei Square provided business intelligence and process streamlining services. They leveraged their expertise by decommissioning old reports and automating the migration of data through dashboards into reports. 

    "In my view, I have full confidence." 

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  • 21
    • $25,000+
    • 50 - 249 employees
    • London , United Kingdom

    TMotions Global Ltd is a custom software development firm established in 2004. The midsize team specializes in custom software development, enterprise app modernization, application management & support, and cloud consulting & SI. The firm is located in London , United Kingdom and Sahibzada Ajit Singh Nagar, India.

    Clients

    • An Australian food retailer that has 700 stores across Australia and has an online b2B and B2C portal working seamlessly to manage cohesive inventory and order view.
    • A Qatar based food major which supplies culinary products across 1000 restaurants. Powered by MS dynamics and custom .Net portal

    Industries

    Notable Project

    A media and information business partnered with TMotions Global Ltd for web development and management. They're supporting the internal team across several technologies like .Net, Drupal, WordPress, and React.

    "What sets TMotions Global Ltd apart is their openness to discuss challenges and their desire to resolve them."

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  • 22
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 10 - 49 employees
    • Long Crendon, United Kingdom

    GrowCreate is a Long Crendon, United Kingdom-based software development firm. The small company was established in 2012. Their team offers custom software development, web design, web development, ux/ui design, and more.

    Industries

    Notable Project

    GrowCreate redesigned an outcome-based solutions company. This entailed recreating a new website that's easily navigable. Thus, making updating and changing content much more efficient, and increasing traffic.

    "I love how personable they were, nothing is too much trouble."

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  • 23
    • Scheduling

      4.6
    • Quality

      5.0
    • Cost

      4.2
    • NPS

      4.5
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • Leeds , United Kingdom

     Cefar is a digital agency founded in 2006 and headquartered in Leeds, UK with an office in London. Their team of 20 provides PPC, web design, graphic design, and web development services. 

    Clients

    • BalconyUK
    • Springfield Training
    • Este Couture

    Industries

    Notable Project

    Cefar was tasked with rebranding an aromatherapy manufacturing company's corporate image. This involved a new logo, updated packaging labels, and other assets.

    "They considered exactly what I required and delivered a high-quality end product."

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  • 24
    • $100,000+
    • 10 - 49 employees
    • Edinburgh, United Kingdom

    ClearSky Logic, a custom software development firm, was founded in 2018. The firm offers custom software development, BI & big data consulting & SI, cybersecurity, and IT staff augmentation and has a small team.

    Industries

    Notable Project

    ClearSky Logic is an ongoing digital partner. They've developed mobile apps, a customer acquisition platform, and more. The apps are cross-platform and built in React Native for web and mobile. 

    "Their ability to accomplish tasks with a straightforward process stands out."

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  • 25
    • Scheduling

      4.5
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    TechTIQ Solutions is a web design and development agency in London. Founded in 2017, they have about 5 employees that work with a range of clients.  

    Clients

    • Oxford University
    • Imperial College London
    • Total Active Solutions
    • Sake Sommelier Association

    Industries

    Notable Project

    TechTIQ Solutions developed a website and mobile app. Its features include online ordering in addition to ordering through Facebook and the mobile app. They continue to maintain both services.

    “They have an expert mobile app development team and always respond to our inquiries.”

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  • 27
    • $5,000+
    • 50 - 249 employees
    • Sudbrooke,

    Inncrewin Technologies is a software agency based in Bangalore, India, and founded in 2008. Their team of more than 50 offers custom software, web, and mobile app development solutions for small and mid-market firms in the fields of e-commerce, hospitality, and advertising.

    Clients

    • Signature Flow
    • MeetingSense
    • SafeSend Tax Solution

    Industries

    Notable Project

    Inncrewin Technologies provided development services for an accounting software company. The company was looking for an Indian vendor to save up on development costs. The company is impressed with Inncrewin Technologies’ work.

    “They’re structured about their work and are quite flexible.” - CTO, Accounting Software Company

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  • 28
    • Scheduling

      4.8
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Allmatics is a software development company headquartered in Kyiv, Ukraine. They were founded in 2018 and have about 3 teammates. They focus on custom software, web, and mobile app development projects for small businesses and midmarket firms in the healthcare and medical, business services, and e-commerce industries.

    Industries

    Notable Project

    Allmatics finished developing a web-based portal using PHP languages and Java Script. This involved automating and custom-creating features associated with patient results and enrollment.

    "They were very professional and patient with me when I didn’t understand the process."

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  • 29
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    C-BIA Consulting Ltd is a big data company headquartered in London, United Kingdom. Founded in 2006, the small team specializes in BI & big data consulting & SI, IT managed services, custom software development, application management & support, and more.

    Industries

    Notable Project

    C-BIA Consulting Ltd is a business school’s development partner in Microsoft Business Intelligence platform integrations. Their on- and offshore teams develop bespoke code to leverage APIs in several systems. 

    “The C-BIA is very proactive in highlighting risks and suggesting risk mitigation efforts that can be taken.”

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  • 30
    • $1,000+
    • 2 - 9 employees
    • Nottingham,
    Custom software development firm U2A Solutions UK Limited was launched in 2012. Their small team is based in Nottingham, United Kingdom. Their services include custom software development, web development, mobile app development, e-commerce development, and more.

    Industries

    Notable Project

    U2A Solutions UK Limited designed and developed a custom app for a manufacturing company. They built the client's platform which will help link to their central database.

    "Their continued support after the post-project rollout was impeccable."

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