Looking for a top ASP development company in the United Kingdom?

Microsoft developed ASP.NET in 2002 as an open-source and server-side web development framework. It supports multiple programming languages include HTML, C#, F#, C++, and Visual Basic Net.

When hiring an ASP.NET developer, consider the specialties and years of experience needed for your project. Since the ASP.NET framework supports more than one programming language, your developer should have experience not only with ASP but also with your website's development languages. Beginner ASP.NET developers may be familiar with .NET, C#, HTML, and CSS, while more advanced developers will be familiar with .NET, additional programming languages, and development methodologies like Agile.

To assist you in your search for a partner, we’ve compiled this list of the top ASP.NET developers in United Kingdom. Browse descriptions, feedback, and awards to find which can best suit your company’s needs. If you need more support, tell us about your project, and we'll match you with recommended companies.

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
    Notable Project

    DCSL GuideSmiths redeveloped the recruitment software system of a construction firm. After laying out their requirements, DCSL GuideSmiths designed, tested, and delivered on the system. The client was pleased with the project and felt that DCSL GuideSmiths' skills made the collaboration extremely easy. 

    "We were able to see straightaway how the system would look and work. That’s another reason it went so smoothly." – Manager, Support Department, Construction Firm

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  • 2
    $25,000+
    1,000 - 9,999 Employees
    London United Kingdom

    Headquartered in New York, iTechArt is a custom software development company with additional offices in Marietta, Ga. and Iselin, N.J. Since 2002, iTechArt has helped startups and fast-growing tech companies fill in their talent gap and create robust web and mobile solutions that users love. To date, iTechArt’s talent pool includes 1600+ engineers with experience in all of the latest technologies.

    Clients
    ClassPass
    ZEFR
    Gain Capital (forex.com)
    Merkle
    Industries
    Notable Project

    iTechArt Group is assisting with the development of a content management software for video advertisements. The team is building the system to accommodate multiple social media platforms like YouTube and Facebook.

    “The engagement has been very successful overall thus far. The work we've been able to quickly launch wouldn't have been possible without iTechArt's help. In addition to the quality of their code, they've also integrated extremely well into our team, adapting to our internal processes relatively seamlessly.” – Founder & CTO, Software Consulting Agency

  • 3
    $10,000+
    50 - 249 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
    BBC
    Allianz
    Royal Pharmaceutical Society
    Industries
    Notable Project

    A fitness club hired Softwire for several projects after a successful website redesign. Softwire redesigned the client's booking system based on PHP and MySQL. Softwire then created a corresponding mobile app for booking. They also provide general maintenance and support, advise the client on branding and lead generation, and develop any custom software.

    " Their mobile app, connected to the booking system, reduced the number of customers booking through our receptionists from 75% to 5% and allowed customers to easily schedule courses. Their stabilization to our main site helps bring in new members all the time. They cut down a significant amount of labor cost and continue to improve the membership experience." -IT Director, Fitness Club

  • 4
    $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

  • 5
    $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

    An online history encyclopedia hired Geeks to build a web app for extracting content from other websites. The client's key challenge was ensuring that the web app could handle a high volume of data. Geeks developed custom software featuring a user-friendly frontend and a backend capable of extracting significant amounts of data. Finally, Geeks created a JavaScript library that the client can sell to other businesses. The client appreciated Geeks' creativity and innovation.

    "Our visualization engine can generally handle ten times more data and the average JavaScript library. We’ve had no problems with the stability of their code. The server has always been perfect." - Co-Founder, Online History Encyclopedia

  • 6
    $25,000+
    250 - 999 Employees
    Coventry United Kingdom

    Objectivity Ltd. is an IT company headquartered in Coventry, United Kingdom, that provides custom software and web development, as well as web design functions. Founded in 1991, the company has over 600 employees. The businesses they serve represent multiple industries including the business services, financial services, and real estate industries.
     

    Clients
    Edrington
    Suez UK
    ImmobilienScout24
    NHS
    Industries
    Notable Project

    Objectivity Ltd. provided staff augmentation services for a retail solutions company. The client needed Objectivity Ltd. to augment their development team. The team was working on headless commerce solutions, and the company provided teams to help the client with development, business analysis, and test functions. The company’s services have helped the client work more efficiently. 

    “We've seen a positive impact, and they increase our capabilities and capacity to deliver. They bring in a high level of technical expertise.” – Head of Software Development, Software Company 
     

  • 7
    $10,000+
    10 - 49 Employees
    East Grinstead 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 developed an online investor onboarding platform to help make key processes such as fund launches faster and more cost-effective. The Azure-hosted web application was built using ASP.NET MVC, C#, SQL Server, TSQL, AngularJS, Bootstrap and SSRS. In only the first year it reached 20,000 active profiles.

    "Our standard process is to use Ballard Chalmers as a sounding board for technical designs. Whether we’re asking them to do the work or not, they still come back and help us make sure we’re making the right technical choices." - Head of IT, Financial Services Company

  • 8
    $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
    Strengthscope
    Manoto
    Asda
    Buyfair
    Notable Project

    AVAMAE worked with a B2B auction platform by providing a technical solution to physical problem. An app was built as a result, and it featured a multi-level, B2B platform to conduct and participate auctions through. The Microsoft-based app allows for simultaneous listing and bidding at the same time across many devices.

    "Because of their work, we were able to launch the product and begin onboarding companies. We already have over 150 businesses signed up, and we’re beginning to see traction as well. At this point, we’re crowdfunding to expand our services. The site looks amazing, and their team continues to work very closely with it to ensure that it keeps improving over time. It’s been a great collaboration." - CEO, B2B Auction Platform

  • 9
    $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 partnered with a health organization to build a new web-based platform using Microsoft Stack. The platform was a management system that allowed users to track their workflow. After developing the platform, the team integrated it with the client's internal SQL server. The former client was impressed with the team's flexibility and professionalism.

    "BGO have always delivered admirable flexibility, where it is almost like a partnership, and their need to succeed is as great as ours." - Manager, Health Organization

  • 10
    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

  • 11
    $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."

  • 12
    $5,000+
    50 - 249 Employees
    Stanmore United Kingdom

    Satva Softech is a software company in Stanmore, United Kingdom, and Ahmedabad, India. Founded in 2016, they have about 10 employees that serve mostly midmarket and enterprise clients in the IT, e-commerce, and education sectors. Services include custom software, mobile app, and web development.

    Industries
    Notable Project

    Satva Softech provided cross-platform app development for a business services company. Their team implemented a marketplace, payment processor, and in-app messenger tool. The solutions had 12,000 users within 6 months.

    “They often go above and beyond to work additional hours, and even weekends to help solve the issues.” – Co-Founder, Business Services Company

  • 13
    $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
    Mondelez
    SEGA
    Farm Africa
    Notable Project

    Silicon Reef provided SharePoint development services for an agricultural nonprofit. They created two SharePoint solutions for the client, who reported an increase in home page hits by over 110% and other successful metrics. 

    "There was a 67% increase in the number of files stored on our SharePoint within the first month of implementing the changes. The average active files increased from 50 and 60 to 110 and 140. On top of that, home page hits increased by 113%. This all occurred within the first month of the project launch." - Head of Technical Services, Agricultural Nonprofit

  • 14
    $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
    Amerisourcebergen
    Bank of Kigali
    Kuoni
    SAP
    Industries
    Notable Project

    An online learning platform company hired Core Blue Ltd. to build their platform. As part of the engagement, Core Blue Ltd. did market research to identify the gap in the market and then designed the platform based on their findings. They developed the platform using a React framework, focusing on making the UX/UI friendly to the children who will be using the platform. The platform was completed and has been attracting a significant amount of traffic.

    "I was very impressed with the quality of their work. They clarified our ideas and made sure they knew exactly what we wanted." - Founder & Director, Online Learning Platform Company

  • 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
    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

  • 16
    $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
  • 17
    $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 developed a Google Chrome extension for a marketing agency. The extension was to help with lead generation on Facebook. The agency is impressed with the quality of the extension.

    “They really understand that we’re not developers and explain everything in laymen’s terms.” - CEO, Marketing Agency

  • 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

  • 20
    $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

    In order to deploy ThreatSpike, an insurance company engaged with Transputec Ltd for managed IT services. The goal was to enhance business security and avoid advanced threats.

    "They were patient, which was important due to their advanced skillset."

  • 21
    $10,000+
    50 - 249 Employees
    LONDON United Kingdom

    ICterra is a midsize software development firm. Located in ANKARA, Turkey; München, Germany; LONDON, United Kingdom and ISTANBUL, Turkey, the company was founded in 1991. Their services include custom software development, application management & support, Artificial Intelligence, IoT development, and more.

    Industries
    Notable Project

    ICterra provides ongoing application management and support for a telecommunications company. The team handles the design, implementation, and maintenance of the client's license management system components.

    "We had no problems in communication, coordination, and regular updates with any team members during the project."

  • 22
    $5,000+
    10 - 49 Employees
    London United Kingdom

    KUBAS Labs is a web development company founded in 2012 in London with more than 10 professionals. They provide e-commerce, custom software, and web development solutions to clients that work in the industries of advertising, business services, and e-commerce.

    Clients
    TrustCorp
    Industries
    Notable Project

    KUBAS Labs developed a web and analytics tool for a digital marketing firm. The firm was working with a client to find a solution that could track data better than Google Analytics. The client was happy with the website tool that KUBAS Labs developed.

    “They have a very high-skilled e-commerce development division with experience in Magento, WordPress, and Shopify.” - CEO, Digital Marketing Firm

  • 23
    $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."

  • 24
    $10,000+
    50 - 249 Employees
    London United Kingdom

    Incepteo is an innovation-led ‘IDEA TO MARKET’ technology services firm providing 360-degree offerings starting from software development, hosting, support, and digital marketing. Our mantra is to deliver growth outcomes with entrepreneurial vision, effective user experience, and innovation. We bring start-up know-how, corporate maturity, and strategic techno- entrepreneurial experience on the table from inception to growth phases.

    Clients
    Geodis
    Betterlogic
    Capium
    Vision Engineering
    Industries
    Notable Project

    Incepteo developed a cloud-based platform for a large pet products brand. The platform allowed the client to sort, fulfill, and dispatch orders received from their online store. The new system boasted a high user adoption rate, enabled the client to cope with the high volume of their online orders, and streamline workflow.

    "They were responsive to working in a fast-paced, high-growth environment." – IT Director, Pet Products Brand

  • 25
    $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 website for a shoe manufacturer. The manufacturer needed to appeal better to overseas customers through their website. The new site resulted in the mobile user count to grow by 70%.

    “We are able to communicate easily and get a quick response to our requests, which is enough for us.” - Coordinator, Shoe Manufacturer

  • 26
    $5,000+
    10 - 49 Employees
    Surbition United Kingdom
    Mrmmbs Vision, an application development firm, was established in 2011. The small team provides mobile app development, web development, custom software development, ux/ui design, and more. The agency is located in New Delhi, India and Surbition, United Kingdom.
    Industries
    Notable Project

    Mrmmbs Vision was hired by a wholesale company to design and develop a website. The goal is to optimize the site for both mobile and desktop and to align both design and functionality with the client's spec.

    "Mrmmbs team emphasizes a level of personalization and partnership in their work."

  • 27
    $10,000+
    10 - 49 Employees
    Kington United Kingdom

    Omega Softwares is a custom software and web development company based in Mumbai, India, with an office in Kington, UK. The company, founded in 2001, has a team of more than ten that provides custom software development services to various IT, e-commerce, and advertising and marketing companies.

    Clients
    Annair DryChill Tech India Pvt Ltd
    MSAN Mall
    Shivam Hospital
    Shri Nav Durga Milk Supplier
    Industries
    Notable Project

    Omega Softwares was hired by a travel and tour company to develop its website that features online payment and ticket booking functions, as well as the company's web-based MLM business app. Omega Software also did brand promotion for six months. All these projects were completed and met the company's requirements and expectations.

    "It is the best MLM software company in Mumbai location." - Owner, travel and tour company

  • 28
    $5,000+
    10 - 49 Employees
    Hertfordshire United Kingdom

    JANETO is a software company headquartered in Ho Chi Minh, Vietnam with an office in Providence, R.I. Founded in 2014, the team of 21 specializes in web development, mobile app development, and graphic design. They work with midmarket and small businesses, focusing on business services, retail, and e-commerce.  

    Industries
    Notable Project

    JANETO worked with an emoticon social media platform to develop an application for Android. They created an app that features backgrounds and emoticons that can be used in text messages and developed a calendar to release new emoticons for users. The client was impressed with their ability to make the client’s ideas a reality. 

    “They brought our idea to reality. They were quite cost-effective compared to what others quoted. They were easy to work with. Given the language barrier, they were great communicators.” – Director, Emoticon Social Media Platform

  • 29
    Undisclosed
    1,000 - 9,999 Employees
    London United Kingdom
    Compunnel Digital is an app development company. The midsize Plainsboro Center, New Jersey-based company was launched in 1994. Their services include mobile app development, custom software development, ux/ui design, CRM consulting and SI, and more.
    Industries
  • 30
    $250,000+
    250 - 999 Employees
    London United Kingdom

    Devbridge Group is a software design and development company that was founded in 2008. Devbridge Group is based in Chicago with an additional location in Vilnius, Lithuania. Devbridge Group is a team of over 300 that offers mobile app development, web development, UX/UI design and custom software development services. Devbridge Group serves clients in the financial services, manufacturing and information technology fields. 

    Clients
    Grainger
    Art Institute of Chicago
    Mercantil
    Takeda
    Industries
    Notable Project

    An industrial facilities supplier wanted a way to help clients make quick and confident selections from its wide variety of supplies. Devbridge Group created a comprehensive e-commerce platform that organized hundreds of thousands of products by categories and hierarchies, and also included an inventory management system. 

     

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Based on your budget, timeline, and specifications we can help you build a shortlist of companies that perfectly matches your project needs. Schedule a free consultation with a Manifest Analyst.

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