Top 100 Application Modernization Companies in London
The Best of August 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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1$50,000+1,000 - 9,999 employeesLondon, EnglandVention is an artificial intelligence firm. Founded in 2002, the company is based in New York, New York; London, England; Marietta, Georgia and San Francisco, California. The large team focuses on Artificial Intelligence, Custom Software Development, Enterprise App Modernization, cloud consulting & SI, and more.Read More
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IBM PayPal pwc IC MarketsIndustries
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2$100,000+1,000 - 9,999 employeesLondon, EnglandRead More
CI&T (formerly CINQ Technologies) is software development company based in Curitiba, Brazil with additional offices in Brazil and Miami. Founded in 1992, the team of 271 specializes in custom software development, IT staff augmentation, and UX/UI design. They work primarily with enterprise clients in the transportation and financial services industries.
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SITAIndustries
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3$50,000+250 - 999 employeesLondon, EnglandSPD Technology is a software development firm based in London, England; Kyiv, Ukraine; București, Romania and Aradippou, Cyprus. The midsize firm was established in 2006. Their team specializes in Custom Software Development, Artificial Intelligence, Enterprise App Modernization, and Digital Engineering.Read More
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PitchBook GoDaddy Roche MorningstarIndustries
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4$50,000+250 - 999 employeesLondon, EnglandNet Solutions is an artificial intelligence development company founded in 2000. They are based in Toronto, Canada; Chandigarh, India; London, England and New York, New York and have a midsize team. Their services include Artificial Intelligence, E-Commerce Development, Custom Software Development, and Enterprise App Modernization.Read More
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MicrosoftIndustries
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5$10,000+250 - 999 employeesLondon, EnglandRead More
Founded in 2015, Transparity is a cloud consulting & SI company. The midsize London, England-based team offers cloud consulting & SI, IT managed services, Custom Software Development, Artificial Intelligence, and more.
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Apex NSPCC NHS LushIndustries
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6$25,000+250 - 999 employeesLondon, EnglandAltkom Software is a Warszawa, Poland-based custom software development firm. They specialize in Custom Software Development, Mobile App Development, Enterprise App Modernization, and cloud consulting & SI and were launched in 2000.Read More
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BNP ParibasIndustries
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7$25,000+1,000 - 9,999 employeesSt Albans, EnglandFCamara is an user experience agency. Their large team is in São Paulo, Brazil; Leiria, Portugal; St Albans, England and Dubai, United Arab Emirates. Their services include UX/UI Design, IT strategy consulting, cloud consulting & SI, IT staff augmentation, and more. The firm was founded in 2006.Read More
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Farfetch IPSOS Elfa Group BTG PactualIndustries
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8$10,000+50 - 249 employeesLondon, EnglandValor Software is a Lakewood, Colorado-based web design company. The midsize company was established in 2013. Their services include Web Design, UX/UI Design, IT strategy consulting, IT staff augmentation, and more.Read More
Clients
BreetheIndustries
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9$10,000+50 - 249 employeesLondon, EnglandRead More
Haefele Software is a midsize Cape Town, South Africa-based software development company. They focus on Custom Software Development, Enterprise App Modernization, Web Development, API Development, and more and were founded in 2006.
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Tesco Burger King AS Watson Group PikmykidIndustries
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10$25,000+250 - 999 employeesLondon, EnglandHelpware Tech is a midsize San Francisco, California-based IT strategy consulting company. They provide IT strategy consulting, IT staff augmentation, Custom Software Development, Web Development, and more and were founded in 2015.Read More
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Google Microsoft PWC CompIQIndustries
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11$10,000+10 - 49 employeesLondon, EnglandLaunched in 2020, Hue & Machine is a small user experience company. Their team focuses on UX/UI Design, Enterprise App Modernization, Web Development, AI Consulting, and more. The firm is headquartered in London, England and New York, New York.Read More
Clients
Stanford University Microsoft Clair HenkelIndustries
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12$50,000+250 - 999 employeesLondon, EnglandRead More
Parkside Interactive is a software company founded in 2007 with more than 50 members. They provide custom software development, enterprise app modernization, and UX/UI design services from their office in Graz, Austria. They work primarily with small businesses.
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LinkedInIndustries
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13$25,000+50 - 249 employeesLondon, EnglandInnovify is an artificial intelligence development company. Founded in 2011, the midsize agency is located in London, England; San Francisco, California; Austin, California and New York, New York. Their services include Artificial Intelligence, AI Consulting, Custom Software Development, IT strategy consulting, and more.Read More
Clients
ARM INCIndustries
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14Undisclosed1,000 - 9,999 employeesLondon, EnglandIntive is a large Enterprise App Modernization company. The Wrocław, Poland-based company was founded in 1999. Their team provides Enterprise App Modernization, UX/UI Design, Mobile App Development, Application Testing, and more.Read More
Clients
Audi BMW Pockit TandemIndustries
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15$50,000+50 - 249 employeesLondon, EnglandMetasite is a midsize software development firm established in 1997. Their services include Custom Software Development, Enterprise App Modernization, Generative AI, AI Agents, and more. The firm is based in Vilnius, Lithuania and London, England.Read More
Clients
Man Group WTW BLME British LandIndustries
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16$25,000+10 - 49 employeesLondon, EnglandJourni is a web development company. The small London, England-based agency was founded in 2022. Their team provides Web Development, IT staff augmentation, Custom Software Development, Artificial Intelligence, and more.Read More
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17$1,000+50 - 249 employeesCity Business Centre , EnglandDreams Technologies, UK & India is a custom software development firm based in Coimbatore, India and City Business Centre , England. The midsize company was established in 2013. Their services include Custom Software Development, Enterprise App Modernization, DevOps Managed Services, Artificial Intelligence, and more.Read More
Clients
Paguishop.Industries
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18$5,000+250 - 999 employeesLondon, EnglandRead More
A Salesforce Partner Innovation Award winner 2020. A full-service Salesforce Platinum consulting, development & outsourcing partner delivering across the entire Salesforce platform. 500+ people, 16 offices in 12 countries, we think globally and delivery locally.
We have been 100% focused on helping transform businesses within the Salesforce ecosystem over the last 10 years. Clients love our flexible, nimble, and cost-effective approach. It's why we receive an average customer satisfaction rating of 4.8 out of 5.
As PDO Experts, Salesforce.org Impact Partners, and Tableau Partners, we are one of a few Salesforce partners to have the technical scale, expertise, and experience to design & deliver core Salesforce implementations & AppExchange apps.
You benefit from our industry knowledge and experience by implementing a best practice solution within your business. Quickly & efficiently. Our specialist certified consultants & developers have delivered over 1000 projects to more than 350 clients.
We work hand-in-hand with stakeholders to create achievable roadmaps, deliver benefits quickly & maximize Salesforce investments. We have the technical expertise & experience to deliver solutions across all Salesforce clouds, for all sizes of companies, in many industries.
With 500+ Salesforce professionals located in our regional offices and central delivery hubs, we utilize best practice Salesforce technology and dev ops, enabling our customers to realize the benefits quickly.
We have the scale to provide dedicated teams of developers and consultants to our GSI and ISV partners. Since 2013, Salesforce Services has used VRP’s development expertise on over 20 of their most strategic, enterprise accounts. As one of the few PDO experts, we have helped ISVs with ideation, design, development, and support with AppExchange apps.
Our dedicated Managed Service team provides support, admin & small enhancements to clients via flexible, responsive & cost-effective monthly packages of hours.
Key clients: Rolls Royce, Welk Resorts, BVT Sweden, Felm, Beyond Better Foods, Digital Genius
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Rolls RoyceIndustries
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19Undisclosed1,000 - 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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20$75,000+10 - 49 employeesOtford, EnglandEcce. Is a small software development company based in Otford, England. Launched in 2000, the team specializes in Custom Software Development, Web Development, Mobile App Development, E-Commerce Development, and more.Read More
Clients
Telecoms World The NHS Sennheiser StabicraftIndustries
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21$25,000+50 - 249 employeesLondon, EnglandHeadquartered in London, England and Prague, Czech Republic, Applifting is a custom software development firm. Founded in 2014, the midsize team offers Custom Software Development, Mobile App Development, Artificial Intelligence, Generative AI, and more.Read More
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AdidasIndustries
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22$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.
Industries
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23$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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24$10,000+50 - 249 employeesLondon, EnglandRead More
Somo is a digital development company of 125 employees, founded in 2009. Their headquarters is in London, England, with other locations in New York, San Francisco, Singapore, and Bristol, England. They offer numerous service lines, including mobile app development, enterprise app modernization, web development, and mobile marketing. They serve midmarket and enterprise businesses in various industries: media, automotive, business, financial services, advertising, and more.
Clients
AudiIndustries
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25$50,000+2 - 9 employeesLondon, EnglandRead More
Seb Azzo is a custom software development company based in London made up of a team of fewer than 10 members. Since their founding in 2012, they have provided custom software development and enterprise app modernization solutions for clients ranging from startups to large firms, working in industries such as hospitality, education, and business services.
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Accor GroupIndustries
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26$5,000+50 - 249 employeesHarrow, EnglandIT Path Solutions, a web development company, is headquartered in Mooresville, North Carolina; Ahmedabad, India and Harrow, England. The midsize team focuses on Web Development, AI Consulting, Enterprise App Modernization, cloud consulting & SI, and more. The company was established in 2012.Read More
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Digital Civic- E CitizenIndustries
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27$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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28$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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29$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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30$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.
Industries
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