Top 90 ASP.NET Developers in the United Kingdom

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Top 90 ASP.NET Developers in the United Kingdom

June 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
    • $50,000+
    • 250 - 999 employees
    • London, United Kingdom

    DCSL GuideSmiths is a bespoke software development company headquartered in Farnborough, England with additional engineering centers in London, Manchester, England, and Madrid, Spain. Across international locations, they have a team of more than 250 individuals providing custom software, mobile application, and web development services to a diverse clientele. They support established businesses, nonprofits, government organizations, and startups

    Clients

    • Mitsubishi
    • Hospify
    • Skanska
    • Water Aid

    Industries

    Notable Project

    A real estate investment company hired DCSL GuideSmiths to provide customer portal development. They use different technologies to write the site's new iteration, develop the frontend, and host the software.

    "Their team has enabled us to get through the rough patches we’ve faced with our project."

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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 aided the software development efforts of a specialized software company. The team integrated expanded API solutions into an existing application to enable data access among customers.

    "Their team kept our expectations in mind and had no complaints throughout the project."

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  • 3
    • Scheduling

      4.3
    • Quality

      4.8
    • 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

      4.5
    • Quality

      4.6
    • Cost

      4.4
    • NPS

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

    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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  • 5
    • $50,000+
    • 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 designed and developed a web-based platform for a strength assessment business. The team managed the entire process from coding to deployment to hosting. 

    "They’re a core part of what we do now."

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  • 6
    • $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

    A professional sports league’s communications team hired BrightStarr to build a SharePoint system to share documents, data, analytics, and resources and communicate more effectively across teams. At the time of the interview, the platform was not live, but the client said the partnership has been positive so far.

    “Overall, the engagement has been really positive. One of the reasons that I decided to go with BrightStarr is that they aren't just going to deliver what was requested. BrightStarr is going to challenge us to do some new and innovative things and think outside the box.” – Strategic Planning Analyst, Professional Sports League

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  • 7
    • $5,000+
    • 250 - 999 employees
    • London, United Kingdom

    Exato Software is a development agency based in Jaipur, India. They were founded in 2019 and have a team of around 10 employees. Their main services include custom software, web, and mobile app development for small businesses. 

    Clients

    • Mezatwins
    • Consumer Truth
    • Waggy Tail Petcare
    • Karachi Kitchen

    Industries

    Notable Project

    A crowdfunding platform hired Exato Software to develop a web app where people can start a fundraiser and receive money online from donors. They integrated a payment gateway and implemented security protocols.

    "Their feedback, incorporation, and report system ensured timely completion of the beta version and final project."

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  • 8
    • $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

    Transputec Ltd provides ongoing data and system security for their hospitality industry client. They leverage a security-as-a-service platform to prevent data loss, malware, and phishing attacks, and more. 

    "I don’t’ feel like I’m paying for technical aspects of the work that are unnecessary." 

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  • 9
    • 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 website for an athletic nonprofit. ACS worked on the backend and content of the nonprofit’s website to make it more easily manageable. ACS’s work has left a positive impact on the nonprofit.

    “There’s a high level of trust between our company and ACS.” - Co-Founder, Athletic Nonprofit

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  • 10
    • $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

    • Electrolux
    • Virgin Atlantic Airways
    • Investec
    • American Express

    Industries

    Notable Project

    Ballard Chalmers Ltd provides software development services to support an application for a luxury yachting company. The team not only manages the platform to ensure stability but also advances the product.

    "Their levels of transparency and honesty distinguish them from other providers."

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  • 11
    • 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

    A corporate finance company needed a software development partner to help support their clients. They chose to partner with Core Blue because of how they approach a project like this.

    "They are always friendly and try their best to deliver the best product they can."

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  • 12
    • $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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  • 13
    • 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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  • 14
    • $25,000+
    • 10 - 49 employees
    • Kingston upon Thames, 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 created two SharePoint solutions for a resources and agriculture NGO spread between the United Kingdom and Africa. They made it so all teams can access tools and final documentation.

    “Their best selling point is their willingness and desire to understand our operating model.”

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  • 15
    • $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 provided certified Apple and Microsoft training for an IT support company. 

    "They clearly understood our training requirements and were able to recommend the courses that we would need."

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  • 16
    • 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 designed and developed an outcome-based solution for a global investment manager seeking more engagement and flexibility from their website. We developed a scalable solution that could meet their future needs, including a multi-lingual setup. We also introduced new custom features, such as document libraries and team profiles, and ensured compliance by personalizing content and navigation for different visitor types.

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

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  • 17
    • Scheduling

      4.8
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    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
    • 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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  • 19
    • $5,000+
    • 50 - 249 employees
    • Sudbrooke, United Kingdom

    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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  • 20
    • $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

    • Zanzibar Amber Resort
    • YourGene Health
    • Pastdrives Ltd

    Industries

    Notable Project

    Full Metal Software developed a baseBot molecular diagnostics platform for a biotechnology company to replace a legacy system built on Excel spreadsheets. They managed the project seamlessly, implementing internal ideas while sharing their own insights. Full Metal Software’s platform eliminated the need for multiple spreadsheets, delivering significant time-saving results to the client.

    “Project management has been very good. Although it’s like speaking two different languages between our computer and scientific backgrounds, they’ve worked really hard to implement our ideas. They’ve also pushed their own ideas that they know will benefit us.” – Research & Development Scientist, Biotechnology Company

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  • 21
    • 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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  • 22
    • $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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  • 23
    • $1,000+
    • 2 - 9 employees
    • Fulham, United Kingdom

    Lisa Web Design is a web agency based in Küçükçekmece, Turkey with more than two employees. They have offered web design, custom software development, and web development solutions since their founding in 2013.

    Clients

    • Novarch E-Commerce
    • Chandesign
    • Fab Yapı

    Industries

    Notable Project

    Lisa Web Design redesigned a shoe manufacturer's website to target new audiences overseas. The new site would be mobile-responsive and feature the new season's models.

    "Their support is very good, and we can call them by phone."

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  • 24
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 2 - 9 employees
    • London, United Kingdom

    Founded in 2018, Artecha is a development firm. Their team of around 5 employees is based in London, with additional offices in Kyiv, Ukraine and Milan They focus on web development, mobile app development, and application management.

    Clients

    • Propertalis

    Industries

    Notable Project

    Artecha developed a machine learning model for a business consulting company using Spark, MongoDB, Apache Hadoop, and Pytorch. The tool can analyze end clients’ databases and design marketing campaigns.

    "They provided a great experience and the results reached were higher than we expected."

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  • 25
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.8
    • NPS

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

    TensionX is a software company founded in 2020 with fewer than 50 experts. They provide custom software and web development solutions from their office in London. They mainly work with small and mid-market firms in the fields of advertising and business services.

    Clients

    • CloudKii
    • Companion Games
    • Tooled Up Raccoons

    Industries

    Notable Project

    TensionX automated a lead capture program for a financial institution.

    "Everything went accordingly with extra programs to help if necessary."

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  • 26
    • $1,000+
    • 2 - 9 employees
    • Hatfield, United Kingdom

    Innovensa Ltd is a software development firm. Their small team is in Hatfield, United Kingdom and focuses on custom software development, application management & support, mobile app development, web development, and more. The agency was launched in 2017.

    Industries

    Notable Project

    Innovensa Ltd has refurbished the software of a healthcare startup by updating its design and security system. The team has used Azure to develop the cloud-based platform. They also provide branding assistance.

    "They’re an imaginative team, and they’re always willing to go above and beyond to deliver our needs."

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  • 27
    • $25,000+
    • 250 - 999 employees
    • London, United Kingdom

    Custom software development company Equal Experts was established in 2007. Their midsize team is based in London , United Kingdom; Manchester, United Kingdom; New York, New York and Bengaluru , India. Equal Experts offers custom software development, mobile app development, BI & big data consulting & SI, and ux/ui design.

    Industries

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  • 28
    • Undisclosed
    • 250 - 999 employees
    • Nottingham, United Kingdom

    Based in Nottingham, United Kingdom, Axiell is a software development firm. The midsize agency was launched in 1982. Their services include custom software development.

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

    Custom software development company IGS Solutions LTD is in Whetstone , United Kingdom. They provide custom software development, mobile app development, web development, and web design and were founded in 2004.

    Industries

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  • 30
    • $10,000+
    • 10 - 49 employees
    • Pool, United Kingdom

    Launched in 2012, n-Coders is a software development firm. In Pool, United Kingdom and , United Kingdom, their small team provides custom software development, cloud consulting & SI, application management & support, e-commerce development, and more.

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