Top 100 Application Modernization Companies in London
The Best of November 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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31$10,000+10 - 49 employeesLondon, EnglandRead More
Software agency Atlas - Clever Software is headquartered in Essex and another office in London. With 17 employees, the agency specializes in web, custom software, mobile app development, and more for mainly midmarket businesses.
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BarclaysIndustries
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32$10,000+50 - 249 employeesLondon, EnglandRead More
Blueberry Consultants is a software development company based in Birmingham, U.K., with additional locations in London and Cheltenham, U.K. It was founded in 1997 and has 55 employees. They offer custom software development, mobile app development, web development, and e-commerce development to small business and midmarket clients in the IT, business services, e-commerce, and manufacturing industries.
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NHSIndustries
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33Undisclosed1,000 - 9,999 employeesLondon, EnglandNordcloud is a cloud consulting & SI company launched in 2006. Their services include cloud consulting & SI and IT managed services.Read More
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FinnairIndustries
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34$10,000+250 - 999 employeesLondon, EnglandRead More
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.
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The BBCIndustries
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35$25,000+10 - 49 employeesLondon, EnglandRead More
Aleios is a custom software development firm. They are located in London, United Kingdom and have a small team. Their services include custom software development, enterprise app modernization, web development, and other IT consulting and SI. The firm was founded in 2021.
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36$10,000+10 - 49 employeesLondon, EnglandLogicbric is a small application development company. Based in Ahmedabad, India and London, England, the company was launched in 2023. Their services include Mobile App Development, Artificial Intelligence, Custom Software Development, and Enterprise App Modernization.Read More
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37$10,000+2 - 9 employeesLondon, EnglandRead More
Small custom software development firm inCode Systems, is headquartered in London, United Kingdom. The team specializes in custom software development, enterprise app modernization, ux/ui design, e-commerce development, and more.
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38$5,000+10 - 49 employeesLondon, EnglandWazobia Technologies is a London, England-based custom software development firm. The small team provides Custom Software Development, Web Development, Mobile App Development, Enterprise App Modernization, and more and was launched in 2019.Read More
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39$10,000+10 - 49 employeesLondon, EnglandEstablished in 2022, Captivate Solutions Tech Ltd is a IT staff augmentation company. The small team offers IT staff augmentation, custom software development, application management & support, and enterprise app modernization. The agency is in London, United Kingdom.Read More
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40$10,000+50 - 249 employeesTwickenham, EnglandIT strategy consulting company INVINCIX Solutions Private Limited was founded in 2017. Their midsize team is in Singapore, Singapore; Bhubaneswar, India; Ho Chi Minh City, Vietnam and Twickenham, United Kingdom and provides IT strategy consulting, ux/ui design, IT managed services, custom software development, and more.Read More
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XimpleIndustries
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41$5,000+10 - 49 employeesLondon, EnglandRead More
Technology consulting firm Priocept is based in London. Their team includes 11 employees. Priocept has been specializing in e-commerce development, IT consulting, and web development since it was founded in 2004. Most of their partnerships include enterprise and midmarket clients.
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ArgosIndustries
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42$10,000+10 - 49 employeesLondon, EnglandRead More
Viapontica AI is a small Edinburgh, United Kingdom-based custom software development firm. They provide custom software development, IoT development, Artificial Intelligence, product design, and more and were established in 2018.
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43$10,000+50 - 249 employeesLondon, EnglandLaunched in 2020, Moonshot Partners is a IT strategy consulting company. The midsize team offers IT strategy consulting, custom software development, web development, mobile app development, and more. The agency is headquartered in London, United Kingdom.Read More
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44$10,000+50 - 249 employeesLondon, EnglandPlexteq, a custom software development company, was established in 2014. Headquartered in Vinnytsia, Ukraine; Tallinn, Estonia and London, England, their midsize team provides Custom Software Development, Enterprise App Modernization, DevOps Managed Services, BI & big data consulting & SI, and more.Read More
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AVI-SPLIndustries
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45Undisclosed50 - 249 employeesLondon, EnglandDashDevs is a software development company. Founded in 2011, the midsize agency is headquartered in Wilmington, Delaware; London, England; Budapest, Hungary and Lisboa, Portugal. Their services include Custom Software Development, Mobile App Development, API Development, Enterprise App Modernization, and more.Read More
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Fitgrid Kleos LiquidityIndustries
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46$1,000+2 - 9 employeesLondon, EnglandRead More
Digiscript Technical Solutions is an enterprise app modernization company launched in 2019. The small team provides enterprise app modernization, ux/ui design, digital strategy, mobile app development, and more. The agency is located in Swansea , Nigeria and London, United Kingdom.
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47$50,000+50 - 249 employeesLondon, EnglandGlobalbit, a software development firm, is in Rehovot, Israel and London, England. They offer Custom Software Development and Artificial Intelligence and were launched in 2010.Read More
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48$25,000+10 - 49 employeesLondon, EnglandRead More
Husssl Ltd is a custom software development firm. Launched in 2020, the team provides custom software development, mobile app development, enterprise app modernization, ux/ui design, and more. Their small agency is headquartered in London, United Kingdom.
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49$10,000+2 - 9 employeesLondon, EnglandSoftware development company Esseal LTD was founded in 2023. They are based in London, England and Lahore, Pakistan and have a small team. Esseal LTD focuses on Custom Software Development, Web Development, E-Commerce Development, Application Management & Support, and more.Read More
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50Undisclosed10 - 49 employeesLondon, EnglandWestPoint is a small cloud consulting & SI company. In London, England, the firm was launched in 2018. Their team provides cloud consulting & SI, Enterprise App Modernization, Custom Software Development, IoT development, and more.Read More
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51$250,000+1,000 - 9,999 employeesLondon, EnglandInfostretch is a large Application Testing company headquartered in Santa Clara, California and New York, New York. Their services include Application Testing and Enterprise App Modernization.Read More
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52$1,000+50 - 249 employeesLondon, EnglandMidsize custom software development firm Techsense Developers, is headquartered in Newark, Delaware and London, England. Founded in 2017, the team specializes in Custom Software Development, IT managed services, IT staff augmentation, and Enterprise App Modernization.Read More
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53$50,000+50 - 249 employeesLondon, EnglandRead More
Inviqa is a global IT services firm headquartered in London, U.K., that was established in 2012. Their team of 134 employees provides web development, custom software development, staff augmentation, enterprise software integration, strategic consulting services.
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PZ CussonsIndustries
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54$10,000+10 - 49 employeesLondon, EnglandEstablished in 2021, TopFlight Digital is a custom software development company. In Burnley, England and London, England, their small team offers Custom Software Development, API Development, Microservices Architecture Services, Web Development, and more.Read More
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55Undisclosed250 - 999 employeesLondon, EnglandProfessional Advantage is a midsize ERP consulting and SI company in North Sydney, Australia and Melbourne, Australia. Their services include ERP consulting and SI and cloud consulting & SI.Read More
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56Undisclosed1,000 - 9,999 employeesLondon, EnglandEndava is a software development firm. Their large team is in London, England and Atlanta, Georgia. Their services include Custom Software Development and IT strategy consulting.Read More
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57$10,000+250 - 999 employeesSlough, EnglandCoMakeIT is a Baarn, Netherlands-based Enterprise App Modernization company. Their services include Enterprise App Modernization and Custom Software Development.Read More
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58$10,000+2 - 9 employeesLondon, EnglandLeftshifted is a business intelligence company. Their small team of employees is in London, England. Their team specializes in BI & big data consulting & SI and IT strategy consulting.Read More
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The MLC twentyAI Standard InnovationIndustries
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59$5,000+10 - 49 employeesLondon, EnglandRead More
Founded in 2013, APIBEST is an IT managed services company. The agency focuses on IT managed services, enterprise app modernization, e-commerce development, and blockchain and has a small team.
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60$25,000+2 - 9 employeesLondon, EnglandLaunched in 2019, Yaya is an Enterprise App Modernization company. Their team specializes in Enterprise App Modernization and Product Design.Read More
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