Top 100 C# Developers in the United Kingdom
The Best of December 2025Looking for a top C Sharp software development company in the United Kingdom?
The programming language C Sharp (C#), is general-purpose and used for web and mobile apps. It has a number of advantages: It's object-oriented, has automatic garbage collection, functions across platforms, has backward compatibility, and integrates well with other platforms and services.
To assist you in your search for a partner, we’ve compiled this list of the top C# developers in United Kingdom. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best United Kingdom C Sharp (C#) Software Development Companies
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61$10,000+2 - 9 employeesSheffield, EnglandSVAIY ART is a Sheffield, England-based AR/VR development company. The small team specializes in AR/VR development, Video Production, Custom Software Development, and Blockchain and was founded in 2020.Read More
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Katana Inu Mars4 Monday ArigamiIndustries
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62$5,000+10 - 49 employeesLondon, EnglandAuthentic Digital, an UX design company, was launched in 2010. They are located in London, England; Hong Kong, Hong Kong and Kraków, Poland and have a small team. Authentic Digital offers UX/UI Design, Web Design, Custom Software Development, Blockchain, and more.Read More
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J.P. Morgan Asset ManagementIndustries
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63$5,000+50 - 249 employeesTaunton , EnglandRead More
Software Solved is an Exeter, United Kingdom-based custom software development company. They specialize in custom software development, BI & big data consulting & SI, cloud consulting & SI, Artificial Intelligence, and more and were launched in 1998.
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64$100,000+50 - 249 employeesEdinburgh, ScotlandRead More
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.
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65$10,000+10 - 49 employeesPreston, EnglandWozify is a web development firm. They specialize in Web Development, Custom Software Development, Mobile App Development, Artificial Intelligence, and more and were launched in 2012. Their small team is Budapest, Hungary-based.Read More
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AuchanIndustries
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66$25,000+50 - 249 employeesLondon, EnglandRead More
Artificial intelligence firm Incepteo was established in 2007. Their midsize team is headquartered in London, England; New York, New York and Hyderabad, India and provides Artificial Intelligence, Mobile App Development, UX/UI Design, Custom Software Development, and more.
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GeodisIndustries
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67$25,000+10 - 49 employeesLondon, EnglandRead More
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.
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Unilever -
68$5,000+50 - 249 employeesLoughborough, EnglandRead More
Development agency UNL Solutions LTD is headquartered in Loughborough, UK. Since the company was founded in 2006, their team has grown to 68 employees. UNL Solutions LTD specializes in IT managed services, e-commerce development, and mobile app development. They mainly work with mid-sized businesses.
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CorevistIndustries
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69$5,000+2 - 9 employeesColchester, EnglandRead More
Chick Digital, a website development firm, was established in 2015. The small team offers web development, BI & big data consulting & SI, custom software development, and Artificial Intelligence. The company is in Colchester, United Kingdom.
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Gay TimesIndustries
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70$25,000+10 - 49 employeesLondon, EnglandLaunched in 2006, Amexis Ltd is a cloud consulting & SI company. Their small team is in Sofia, Bulgaria; Plovdiv, Bulgaria; London, United Kingdom and Katy, Texas and offers cloud consulting & SI, IT managed services, custom software development, Artificial Intelligence, and more.Read More
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71$10,000+10 - 49 employeesLondon, EnglandRead More
Rightsoft LTD, a custom software development company, was launched in 2018. Headquartered in London, United Kingdom, their small team offers custom software development, web development, mobile app development, IT strategy consulting, and more.
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AsicsIndustries
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72$5,000+10 - 49 employeesLondon, EnglandKingIT Solutions is a Blockchain company. Their small team is located in London, England. Their services include Blockchain and Custom Software Development. The company was established in 2014.Read More
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73$25,000+250 - 999 employeesLondon, EnglandWeb design agency IT Labs is headquartered in Palm Beach Gardens, Florida; London, England; Noordwijk, Netherlands and Skopje, North Macedonia. The midsize team focuses on Web Design, BI & big data consulting & SI, UX/UI Design, IT strategy consulting, and more and was launched in 2005.Read More
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74$25,000+50 - 249 employeesLondon, EnglandRead More
Esynergy is a big data analytics company. They are headquartered in London, United Kingdom and have a midsize team. Their services include BI & big data consulting & SI, cloud consulting & SI, custom software development, mobile app development, and more.
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75$50,000+50 - 249 employeesLondon, EnglandRead More
Vodworks is a London, United Kingdom-based data analytics company. They offer BI & big data consulting & SI, custom software development, broadcast video, IT strategy consulting, and more and were launched in 2011.
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76$10,000+50 - 249 employeesStanmore, EnglandIn Stanmore, England and Raleigh, North Carolina, SATVA Softech is a midsize IT staff augmentation company. They focus on IT staff augmentation, Mobile App Development, Custom Software Development, and Artificial Intelligence and were founded in 2015.Read More
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RitzziIndustries
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77$5,000+250 - 999 employeesManchester, EnglandAress Software is an IT strategy consulting company. Their midsize team is in Nashik, India; Manchester, England; Woburn, Massachusetts and Pune, India and provides IT strategy consulting, cloud consulting & SI, CRM consulting and SI, Cybersecurity, and more. The agency was founded in 1999.Read More
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78$10,000+50 - 249 employeesLondon, EnglandUbistart is a London, England-based software development company. They provide Custom Software Development and Mobile App Development and were launched in 2016.Read More
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79$25,000+50 - 249 employeesLondon, England2Base Technologies is a custom software development firm headquartered in London, England; Kochi, India; Dover, Delaware and Hilbert, Australia. The midsize agency was established in 2010. Their services include Custom Software Development, Artificial Intelligence, Mobile App Development, Enterprise App Modernization, and more.Read More
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United NationsIndustries
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80$75,000+50 - 249 employeesHolt, EnglandThe Virtual Forge, a big data analytics company, was established in 2010. The midsize Holt, United Kingdom-based team provides BI & big data consulting & SI, custom software development, cloud consulting & SI, devops managed services, and more.Read More
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SEGA Kelda Dynamics Ford Network RailIndustries
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81$10,000+10 - 49 employeesRoyal Tunbridge Wells, EnglandRead More
Chilliapple Ltd., a mobile app development company, was launched in 2008. The small team specializes in mobile app development, e-commerce development, custom software development, and web development. The company is based in Kent, United Kingdom and , United Kingdom.
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QuickvitIndustries
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82$10,000+10 - 49 employeesBristol, EnglandNewicon Ltd is a small web development firm. They specialize in web development, web design, and ux/ui design and were launched in 2007. The company is based in Bristol, United Kingdom.Read More
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AirbusIndustries
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83$25,000+10 - 49 employeesLeeds, EnglandRead More
Ventureaxis is a small custom software development firm. Established in 2003, the agency is in Leeds, United Kingdom. Their services include custom software development, web development, enterprise app modernization, and mobile app development.
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84$5,000+10 - 49 employeesSurbition, EnglandRead More
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.
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85$1,000+10 - 49 employeesBirmingham, EnglandRead More
InfoRox is a web & apps development agency based in Birmingham, U.K. The agency, founded in 2012, has a team of less than ten that provides custom software development, mobile app development, web development, IT managed services, and e-commerce development services. InfoRox serves mid-market and other-sized companies in various industries.
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London Business School -
86$5,000+50 - 249 employeesBengaluru, IndiaRead More
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.
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Signature FlowIndustries
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87$100,000+50 - 249 employeesLondon, EnglandInfinity Technologies is a midsize custom software development firm. The London, England-based company was founded in 2003. Their services include Custom Software Development, Web Development, Mobile App Development, and IT staff augmentation.Read More
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88$25,000+50 - 249 employeesLimasol, CyprusTeam4Solution is an application development company. Their midsize team is located in Kuala Lumpur, Malaysia; Bukit Duri, Indonesia; Houston, Texas and Limasol, Cyprus. The company focuses on Mobile App Development, Custom Software Development, Robotics Process Automation, and Low/No Code Development.Read More
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dpearlsIndustries
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89$5,000+10 - 49 employeesLondon, EnglandIoT development company internetum was launched in 2012. Their small team is located in London, England. Their services include IoT development, Mobile App Development, and Custom Software Development.Read More
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90$10,000+50 - 249 employeesWorcester, EnglandSaratoga is a midsize custom software development company. Established in 1998, the team offers Custom Software Development, BI & big data consulting & SI, cloud consulting & SI, IT staff augmentation, and more. The firm is based in Cape Town, South Africa and Worcester, England.Read More
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Old MutualIndustries
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