Top 100 Application Modernization Companies in the United Kingdom
The Best of October 2026Looking for a top legacy modernization service in the United Kingdom?
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 United Kingdom. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best United Kingdom 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$5,000+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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3$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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4$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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5$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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6$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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7$10,000+250 - 999 employeesLondon, EnglandCustom software development company Shinetech Software is headquartered in Beijing, China; Sydney, Australia; Melbourne, Australia and London, England. The midsize company was launched in 2001. Their team provides Custom Software Development, IT staff augmentation, Enterprise App Modernization, and Artificial Intelligence.Read More
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Barts Health NHS TrustIndustries
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8$250,000+1,000 - 9,999 employeesBelfast, Northern IrelandUnosquare, LLC is a custom software development firm. They specialize in Custom Software Development, Digital Engineering, IT staff augmentation, IT managed services, and more and were launched in 2009. Their large team is Portland, Oregon-based.Read More
Clients
Axos Financial, Green Dot Bank, GTreasury, G2 Risk Solutions and Blue Owl Private Equity Stitch Fix and IDX Harvard and McGraw Hill Athena Health and Foundation MedicineIndustries
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9$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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10$10,000+2 - 9 employeesBath, EnglandRead More
Skyward Digital is a Bath, United Kingdom-based user experience design agency and website development company. They offer ux/ui design and web development and were founded in 2021.
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11$5,000+50 - 249 employeesCardiff, WalesBox UK, a custom software development firm, was launched in 1998. The agency provides Custom Software Development, Enterprise App Modernization, Web Development, UX/UI Design, and more and has a midsize team.Read More
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OKdo.comIndustries
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12Undisclosed250 - 999 employeesLondon, EnglandNet Solutions is an AI firm. Their midsize team is based in Toronto, Canada; Chandigarh, India; London, England and New York, New York and provides Artificial Intelligence, E-Commerce Development, Enterprise App Modernization, Custom Software Development, and more. The firm was founded in 2000.Read More
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MicrosoftIndustries
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13$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
Industries
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14$50,000+50 - 249 employeesBelfast, Northern IrelandRead More
Instil Software is a software engineering firm based in Belfast, Northern Ireland. Founded in 2005, Instil has about 30 employees that work across a variety of industries. They offer custom software development, mobile app development, cloud consulting and software integration, IoT, and web development.
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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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16Undisclosed1,000 - 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
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Audi BMW Pockit TandemIndustries
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17$50,000+250 - 999 employeesLondon, EnglandOpinov8 Digital and Engineering Solutions is an AI Consulting company founded in 2017. The midsize London, England-based team focuses on AI Consulting, Custom Software Development, Artificial Intelligence, IT staff augmentation, and more.Read More
Clients
Fortune 500 Companies Renault Swisscom McDonald'sIndustries
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18$10,000+50 - 249 employeesLondon, EnglandValor Software is a midsize website development firm headquartered in Lakewood, Colorado; Dover, Delaware; Praha, Czech Republic and London, England. Established in 2013, the team offers Web Development, IT staff augmentation, IT strategy consulting, Enterprise App Modernization, and more.Read More
Clients
BreetheIndustries
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19$5,000+10 - 49 employeesChobham, EnglandRead More
Custom software development company Blue Tea Software - London is located in Chobham, United Kingdom. The small team provides custom software development, web development, mobile app development, and enterprise app modernization. The firm was founded in 2014.
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R;pple Suicide PreventionIndustries
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20$5,000+2 - 9 employeesKnottingley, EnglandEstablished in 2011, Tucanoo Solutions Ltd is an Enterprise App Modernization company. The company provides Enterprise App Modernization, Custom Software Development, Web Development, API Development, and more and has a small team.Read More
Clients
United Nations Economic Commission For Europe NHS UK Commercial Evaluations Ltd Nexxchange GmbHIndustries
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21Undisclosed1,000 - 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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22$5,000+2 - 9 employeesShrewsbury, EnglandWolf Logic Ltd. Is a software development firm based in Shrewsbury, England; Birmingham, England and London, England. The small team offers Custom Software Development, Enterprise App Modernization, Artificial Intelligence, AI Consulting, and more. The company was launched in 2018.Read More
Clients
Nidec Corporation CareDocs Sheppee International LtdIndustries
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23$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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24$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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25$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
Clients
AdidasIndustries
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26$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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27$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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28$25,000+50 - 249 employeesLondon, EnglandInnovify is an AI Consulting company founded in 2011. The firm offers AI Consulting, Artificial Intelligence, Custom Software Development, Enterprise App Modernization, and more and has a midsize team.Read More
Clients
ARM INCIndustries
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29$25,000+10 - 49 employeesCrowborough, EnglandCustom software development company Elysium Ltd is headquartered in Crowborough, England. The company focuses on Custom Software Development, DevOps Managed Services, Enterprise App Modernization, Application Management & Support, and more and is small.The company was founded in 1991.Read More
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30$25,000+10 - 49 employeesNewquay, EnglandRead More
Big data analytics company flowmoco is based in Newquay, United Kingdom. The small team focuses on BI & big data consulting & SI, cloud consulting & SI, custom software development, mobile app development, and more and was launched in 2012.
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SkyIndustries
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