Top 100 Application Modernization Companies in London
The Best of July 2026Looking for a top legacy modernization service in London?
Application modernization companies can help create new business value from existing applications. Finding the right company to partner with, however, can be an overwhelming process.
To assist you in your search for a partner, we’ve compiled this list of the top application modernization services in London. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best London Enterprise Application Modernization Services
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121$1,000+2 - 9 employeesLoose, EnglandStackslim, a website development firm, is located in Loose, England. The company specializes in Web Development, E-Commerce Development, Web Design, ERP consulting and SI, and more and has a small team.The company was launched in 2025.Read More
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122Undisclosed10 - 49 employeesHigh Wycombe, EnglandCirronex is a small High Wycombe, England-based Application Testing company. Their services include Application Testing and Application Management & Support.Read More
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123$10,000+2 - 9 employeesGuilden Morden, EnglandRead More
Crowers Limited, a custom software development company, is based in Guilden Morden, United Kingdom. The company specializes in custom software development, mobile app development, web development, web design, and more and has a small team.The company was founded in 2017.
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XylemIndustries
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124$250,000+10,000+ employeesCaldecotte, EnglandCloud consulting & SI company ITC Infotech focuses on cloud consulting & SI and ERP consulting and SI. They were launched in 2000.Read More
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125$50,000+10 - 49 employeesEarley, EnglandLaunched in 2019, VA Software Solutions ltd is a custom software development company. Based in Earley, England and Sofia, Bulgaria, the team focuses on Custom Software Development and Web Development.Read More
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126$25,000+2 - 9 employeesReading, EnglandAgentify is a custom software development firm. They are in Reading, United Kingdom and have a small team. Their services include custom software development, Artificial Intelligence, application management & support, enterprise app modernization, and more.Read More
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127$25,000+2 - 9 employeesBordon, EnglandPivale is a Business Consulting company. The Bordon, England-based agency was founded in 2008. Their team specializes in Business Consulting and Web Design.Read More
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128Undisclosed250 - 999 employeesBrighton and Hove, EnglandUX design agency Catalyst IT was launched in 1997. The company provides UX/UI Design and Custom Software Development.Read More
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129$5,000+10 - 49 employeesBedford, EnglandLaunched in 2008, Anterec Ltd is a software development firm. The firm specializes in Custom Software Development and Web Development, and is small.Read More
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130$25,000+2 - 9 employeesMilton Keynes, EnglandNugon is a small software development company. They focus on Custom Software Development and Enterprise App Modernization and were launched in 2020.Read More
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131$25,000+2 - 9 employeesCambridge, EnglandOrthogonality is a Cambridge, England-based software development firm. They offer Custom Software Development and Web Development.Read More
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132Undisclosed250 - 999 employeesLondon, EnglandWestbrook International is a CRM consulting and SI company founded in 1992. The midsize team provides CRM consulting and SI and Enterprise App Modernization.Read More
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133Undisclosed250 - 999 employeesBrentford, EnglandBusiness Pro Designs is an app development firm. Founded in 2007, the company is based in Brentford, England. Their team focuses on Mobile App Development and Web Design.Read More
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134Undisclosed50 - 249 employeesLondon, EnglandSquirro is a midsize Generative AI company. Founded in 2012, the team offers Generative AI and BI & big data consulting & SI.Read More
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Bank of England OCBC Bank Standard Chartered CandriamIndustries
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135Undisclosed50 - 249 employeesLondon, EnglandSiliconMint is a San Francisco, California-based software development firm. Launched in 2012, the team focuses on Custom Software Development and Web Development.Read More
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136Undisclosed10 - 49 employeesLondon, EnglandCan Factory is a software development firm. In London, England, their team provides Custom Software Development and Mobile App Development.Read More
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137Undisclosed10 - 49 employeesLondon, EnglandBrand42, a web design agency, offer Web Design and Web Development. They were founded in 2004.Read More
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138$5,000+10 - 49 employeesAldermaston, EnglandIn Aldermaston, England, Voyager Networks is an IT managed services company. Their services include IT managed services and Enterprise App Modernization.Read More
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