Top 100 Application Modernization Companies in London
The Best of December 2025Looking 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+50 - 249 employeesHo Chi Minh City, VietnamIT 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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32$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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33$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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34$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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35$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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36$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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37$50,000+50 - 249 employeesLondon, EnglandGlobalbit is a custom software development company. The company is located in Rehovot, Israel and London, England. Their team offers Custom Software Development and Mobile App Development.Read More
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38$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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39$25,000+10 - 49 employeesLondon, EnglandRead More
Diadraw, a software development firm, is based in Plovdiv, Bulgaria. The company specializes in custom software development, web development, mobile app development, enterprise app modernization, and more and has a small team.The company was launched in 2012.
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40$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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41$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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42Undisclosed1,000 - 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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43Undisclosed250 - 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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44$10,000+250 - 999 employeesBaarn, NetherlandsCoMakeIT 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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45$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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46$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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47Undisclosed250 - 999 employeesLondon, EnglandZemoso Technologies is a Farmers Branch, Texas-based software development firm. The team specializes in Custom Software Development and Enterprise App Modernization.Read More
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48$25,000+50 - 249 employeesLondon, EnglandRead More
Box UK is an enterprise software development company based in Cardiff, UK, with an office in London. The company, founded in 1998, has more than 50 employees who provide, among others, custom software development, web development, and enterprise app modernization services to various businesses.
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OKdo.comIndustries
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49Undisclosed50 - 249 employeesLondon, EnglandCodurance Ltd, a custom software development company, was founded in 2013. The team provides Custom Software Development and Enterprise App Modernization.Read More
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50$25,000+50 - 249 employeesNovi Sad, SerbiaDevtech Group is a custom software development company. The Novi Sad, Serbia-based agency specializes in Custom Software Development and Enterprise App Modernization.Read More
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51$10,000+250 - 999 employeesLondon, EnglandFounded in 2006, On Tap is an e-commerce development firm. The team focuses on E-Commerce Development and Enterprise App Modernization.Read More
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52$25,000+250 - 999 employeesLondon, EnglandPythian is a business intelligence company in Ottawa, Canada and San Francisco, California. They specialize in BI & big data consulting & SI and cloud consulting & SI and were launched in 1997.Read More
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Fox SportsIndustries
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53$25,000+1,000 - 9,999 employeesHarrow, EnglandIT strategy consulting company Changepond Technologies Private Limited was established in 2000. The agency specializes in IT strategy consulting and IT managed services.Read More
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54$50,000+50 - 249 employeesLondon, EnglandYozu is a midsize custom software development firm founded in 2013. Their team focuses on Custom Software Development and Mobile App Development.Read More
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55$1,000+50 - 249 employeesLondon, EnglandQuantum-h is a software development company launched in 2019. The firm provides Custom Software Development and Web Development.Read More
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56$10,000+50 - 249 employeesLondon, EnglandDigiata is a custom software development firm founded in 2001. The firm offers Custom Software Development and Enterprise App Modernization.Read More
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Vitality Discovery Insurance Allan Gray Old MutualIndustries
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57$75,000+50 - 249 employeeslondon, EnglandGravity9, a midsize custom software development firm, is located in Birmingham, England and london, England. The team offers Custom Software Development and Enterprise App Modernization.Read More
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58$10,000+10 - 49 employeesLondon, EnglandHeadquartered in London, England, Lolly Co is a small Enterprise App Modernization company. The team specializes in Enterprise App Modernization and Digital Strategy.Read More
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59Undisclosed10 - 49 employeesLondon, EnglandEstablished in 2012, LiveWyer is an IT strategy consulting company. The team offers IT strategy consulting and cloud consulting & SI.Read More
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60$5,000+2 - 9 employeesLondon, EnglandCode Development Ltd. Is a custom software development firm. The London, England-based company provides Custom Software Development and Application Testing.Read More
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