Looking 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. If you need more support, tell us about your project, and we'll match you with recommended companies.

List of the Best United Kingdom Enterprise Application Modernization Services

  • 1
    $10,000+
    250 - 999 Employees
    London United Kingdom

    SourceFuse is a software company headquartered in Neptune Beach, Fl. founded in 2005. They have offices in Noida and Chandigarh in India, as well as in London and Hong Kong. They specialize in cloud consulting & SI, enterprise app modernization, and custom software development. They work with clients ranging from startups to enterprises and from industries such as health care, IT, and transportation.

    Clients
    Firehouse Subs
    Suzuki Motorcycles
    One Call Care Management
    Industries
    Notable Project

    SourceFuse has helped maintain an e-commerce automation company's platform for the past 10 years. SourceFuse assisted in new integration development, integration maintenance, product improvement, and new features & functionalities. The company has experienced a 32% ARPU increase with the help of SourceFuse.

    "The SF team is self sufficient with an organizational structure of managers and leads, taking requirements from the internal team and driving tasks to completion." - Managing Director, E-commerce Automation Company

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  • 2
    $10,000+
    10 - 49 Employees
    East Grinstead United Kingdom

    Ballard Chalmers is a software development company based just south of London. Founded in 2005, their team provides custom software development, modernisation and integration, as well as support and IT Managed Services.

    Clients
    BBC
    RHS
    Virgin
    NHS
    Industries
    Notable Project

    Ballard Chalmers developed an online investor onboarding platform to help make key processes such as fund launches faster and more cost-effective. The Azure-hosted web application was built using ASP.NET MVC, C#, SQL Server, TSQL, AngularJS, Bootstrap and SSRS. In only the first year it reached 20,000 active profiles.

    "Our standard process is to use Ballard Chalmers as a sounding board for technical designs. Whether we’re asking them to do the work or not, they still come back and help us make sure we’re making the right technical choices." - Head of IT, Financial Services Company

  • 3
    $50,000+
    250 - 999 Employees
    London United Kingdom

    DCSL GuideSmiths is a bespoke software development company headquartered in Farnborough, England with additional engineering centers in London, Manchester, England, and Madrid, Spain. Across international locations, they have a team of more than 250 individuals providing custom software, mobile application, and web development services to a diverse clientele. They support established businesses, nonprofits, government organizations, and startups

    Clients
    Mitsubishi
    Hospify
    Skanska
    Water Aid
    Notable Project

    DCSL GuideSmiths redeveloped the recruitment software system of a construction firm. After laying out their requirements, DCSL GuideSmiths designed, tested, and delivered on the system. The client was pleased with the project and felt that DCSL GuideSmiths' skills made the collaboration extremely easy. 

    "We were able to see straightaway how the system would look and work. That’s another reason it went so smoothly." – Manager, Support Department, Construction Firm

  • 4
    $50,000+
    50 - 249 Employees
    London United Kingdom

    Intellectsoft is a boutique digital transformation consultancy headquartered in Palo Alto, California. The Company provides cutting edge engineering solutions for global and Fortune 500 companies with the mission to help enterprises accelerate adoption of new technologies, untangle complex issues that always emerge during digital evolution, and orchestrate ongoing innovation.

    Intellectsoft maintains its advanced domain expertise through five dedicated labs:  Cognitive Computing, Decentralized Applications (i.e. Blockchain), Internet-of-Things (IOT), Premier Customer Experience (CX), and Mixed Reality (AR, VR).

    Established in 2007, Intellectsoft operates across multiple offices with the engineering centers in the U.S., the U.K., the Nordic region and Eastern Europe.

    Clients
    Eurostar
    Harley Davidson
    Jaguar
    Universal Pictures
    Industries
    Notable Project

    Intellectsoft created an e-commerce app with matching backend infrastructure, then integrated it into the client’s blockchain technology. Transforming the given creative demands into a satisfactory product under a strenuous deadline was deemed impressive, as were their communication skills and determination.

    “We've given them a challenge, and they've met it, which is why Intellectsoft has become our leading service provider for technology development.” – Program Manager, Holding Company

  • 5
    $25,000+
    50 - 249 Employees
    Cardiff United Kingdom

    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. 

    Clients
    OKdo.com
    RS Components
    ateb
    BMJ Best Practice
    Industries
    Notable Project

    Box UK was hired by an Employee Benefits Service to oversee and advise on the Service's new e-commerce platform. But their service was expanded to include the development of the platform, rewriting some parts in Symfony from the original CakePHP. The client was so satisfied with the work that Box UK is still onboard to supply new features on the platform as needed. 

    "Box UK has a very modern, agile approach and is good at looking at new methods of working." - Project Manager, Employee Benefits Service 

  • 6
    $25,000+
    250 - 999 Employees
    Coventry United Kingdom

    Objectivity Ltd. is an IT company headquartered in Coventry, United Kingdom, that provides custom software and web development, as well as web design functions. Founded in 1991, the company has over 600 employees. The businesses they serve represent multiple industries including the business services, financial services, and real estate industries.
     

    Clients
    Edrington
    Suez UK
    Industries
    Notable Project

    Objectivity Ltd. provided staff augmentation services for a retail solutions company. The client needed Objectivity Ltd. to augment their development team. The team was working on headless commerce solutions, and the company provided teams to help the client with development, business analysis, and test functions. The company’s services have helped the client work more efficiently. 


    “We've seen a positive impact, and they increase our capabilities and capacity to deliver. They bring in a high level of technical expertise.” – Head of Software Development, Software Company 
     

  • 7
    $50,000+
    50 - 249 Employees
    Belfast United Kingdom

    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.

    Clients
    IBM
    Deloitte
    Rolls-Royce
    Salesforce
    Industries
    Notable Project

    Instil conducted research, design, and testing of several applications, from mobile apps to server architecture for a large Canadian telecommunications firm. They delivered several user and provider-side portals for changing features for telecom customers and improving the consumer experience. The client praised both quick delivery time and high-quality code from Instil's team.

    "Their competitiveness and their intelligence make them stand out from the crowd. Instil’s sheer breadth of knowledge makes their software services very desirable." - Software Architect, Telecommunications Firm

  • 8
    $25,000+
    10 - 49 Employees
    Leeds United Kingdom

    Audacia is a bespoke software development firm headquartered in Leeds, UK. Founded in 2007, and have about 30 employees, most of their clients are large-scale enterprises in the European market. They provide custom software development, web development, mobile apps, software integration, and staff augmentation.

    Clients
    O2
    TD Bank
    Enterprise Car Club
    Pfizer
    Industries
    Notable Project

    Audacia developed a sophisticated Magento-integrated database for a data center equipment broker. Audacia delivered a high-performing database integrated with both the Magento build and Sage 200 ERP, and the site has had no unplanned downtime since partnering with them.

    "They were clear and transparent, which is important for project management. Their updates were good and they were fantastic communicators." — IT Security Manager, Hardware Broker

  • 9
    $10,000+
    10 - 49 Employees
    London United Kingdom

    Appify is a mobile app development and consultancy agency located in Tullamore, Ireland. The team of about 5 employees serves enterprises and midmarket businesses in the financial services, business services, education, health care and medical, real estate, and retail industries. Their services include mobile app development, UX/UI design, AR/VR development, IoT development, and enterprise app modernization.

    Clients
    Brother
    NHS
    IRFU
    Epyx
    Industries
    Notable Project

    Appify developed native iOS and Android mobile apps for a marketing agency’s third-party clients. The team worked on the UX of those apps and provided UX design support for websites. They were a communicative partner whose efforts were consistently met with positive responses.

    “Appify communicates very efficiently in non-technical terms that everyone can easily understand.” – Digital Technology Consultant, Marketing Agency

  • 10
    Undisclosed
    10 - 49 Employees
    Harrogate United Kingdom

    Eden Agency is a digital agency based in Knaresborough, UK. It was founded in 2007 and now employs a team of 21 that provides web design, digital strategy, web development, mobile app development, UX/UI design, social media marketing, and AR/VR development services.

    Clients
    Formula1
    Auntie Anne's
    Curtis Furniture
    Yara
    Industries
    Notable Project

    Eden Agency provided UX and development support for a financial investment and management tool. They built an application process for investors coming to the London Stock Exchange and self-service capabilities for corporate users of the tool. The client's overall response to Eden Agency's work was positive, and the feedback resulted in future work.

    "They are excellent project managers; we have no issues at all. I've dealt with IT people before, and this team is the most personable. They understand business and commerciality, and they deliver on their promises." — Director, Share Registry and Financial Services Provider

  • 11
    $10,000+
    50 - 249 Employees
    Birmingham United Kingdom

    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.

    Clients
    Hewlett Packard
    Shell
    Barclays Bank
    Toshiba
    Industries
    Notable Project

    Blueberry Consultants designed and built a platform to order healthcare items across multiple user and supplier systems for a medicinal product startup. The client was impressed with their expertise.

    "Their recommendations proved to be vital for improving the overall development process." –Managing Director, Medical Product Start-Up

  • 12
    $50,000+
    50 - 249 Employees
    London United Kingdom

    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.

    Clients
    BBC
    Warner Music International
    Virgin
    Lush Cosmetics
    Industries
    Notable Project

    Inviqa provided full-cycle web development for a holding company. They created over 50 flagship sites for different products using Magento, WordPress, and Drupal. The websites were responsive, e-commerce ready, and consistent with the products' respective brands.

    "We've gone from having a skeletal technical architecture that supported one or two brands to delivering 10 to 12 brands, and more than 60 websites over the course of these three years. It's a big feat that they've managed to deliver." – Head of Digital Solutions, Global Holding Company

  • 13
    Undisclosed
    1,000 - 9,999 Employees
    London United Kingdom

    Kin + Carta is a tech-centered management consultancy based in Chicago. Founded in 1964, they also have offices in London, San Francisco, New York, and Singapore. Their team of approximately 3,000 focuses primarily on enterprise clients in the financial services and health care fields. Services include mobile app development, cloud consulting, and more.

    Clients
    AstraZeneca
    Expedia
    Santander
    Pizza Hut
    Industries
    Notable Project

    Kin + Carta built a native mobile app for a health care nonprofit in advance of open enrollment, upgrading their old platform. They built the app for iOS and Android with a focus on human-centered design,

    "They helped us go beyond the average of health care to meet the expectation of digital." - CIO, Nonprofit Health Insurance Provider

  • 14
    $50,000+
    2 - 9 Employees
    London United Kingdom

    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.

    Clients
    Accor Hotels
    Novotel Hotels
    Uniworld Cruises
    Industries
    Notable Project

    Seb Azzo was approached by a branding agency for assistance with the creation of online guides for global access. The product allows for seamless downloading of the guidelines from anywhere in the world, with an interface that's easy to use.

    "Because of the flexibility of their services and willingness to undertake a brand new product build, our partnership has been very exciting. We’ve worked with other development agencies in the past that stopped communicating with us after completing the work, but their team has stayed in touch." - Senior Account Manager, Branding Agency

  • 15
    $5,000+
    10 - 49 Employees
    London United Kingdom

    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. 

    Clients
    Virgin Mobile
    Avis Budget Group
    Euroffice
    Dyson
    Industries
    Notable Project

    Priocept completed a Sitecore CMS implementation for an insurance trade association. The agency singlehandedly executed on every aspect of development. The client and Priocept have formed a strong, durable working relationship. 

    "The new site boasts nearly a 30 percent increase in Web traffic. It’s very much improved now. We’ve got a mass of improvement and in peers. We’ve got generally much higher satisfaction from staff and users alike."–Web Content Manager, Trade Association 

  • 16
    $10,000+
    10 - 49 Employees
    Southend-on-Sea United Kingdom

    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.

    Clients
    design thing
    fsb
    NHS
    SmartDebit
    Industries
    Notable Project

    Atlas - Clever Software developed an app for a corporate accounting firm. The firm wanted an app that would increase company engagement. Atlas - Clever Software handled everything development-wise. 

    "The app was very well received by our team, by the rest of the company, by the board members, and now our customers. It’s a unique offering that none of our competitors are able to contend with." – Head of Internal Delivery, Corporate Accounting Firm

  • 17
    $5,000+
    50 - 249 Employees
    London United Kingdom

    Founded in 2010, 7EDGE is a development company headquartered in Bengaluru, India. Their team of 30 provides web and mobile development, custom software development, SEO, and conversion optimization. They work with small, mid market, and enterprise companies.

    Clients
    Diageo
    Facebook
    IBM
    Industries
    Notable Project

    7EDGE partnered with a media buying firm to help them with a portal application for media buying and selling coordinated with a calendar function. They provided the client with development for the application over the course of six months. The project was successful and they were able to include everything the client needed. 

    “There are a lot of complex calculations internal to the app. It needs a lot of brains to come up with the right numbers. I believe we were finally able to get everything right.” ––Director, Media Buying Firm 

  • 18
    $10,000+
    10 - 49 Employees
    Stafford United Kingdom

    Langley Foxall Ltd. is a business software company based in Stafford, United Kingdom. Founded in 2013, this company has 14 employees. Services provided by Langley Foxall Ltd. include custom software development, app modernization, and mobile app development for small businesses.

    Clients
    Easy Living Mobility
    Penny Hydraulics
    fermacell
    Industries
    Notable Project

    Langley Foxhall Ltd. developed an online tool for a hydraulics company. The tool was designed to help customers find the right products and solutions for their needs. The client reported an increase in leads for the sales team and more sales that may not otherwise have been attained.

    "We found working with Langley Foxall to be very easy. They agreed a 'Statement of Works' document with us delivered what was promised." Marketing Manager, Hydraulics Company

  • 19
    $25,000+
    50 - 249 Employees
    London United Kingdom

    TMotions Global Ltd is a custom software development firm established in 2004. The midsize team specializes in custom software development, enterprise app modernization, application management & support, and cloud consulting & SI. The firm is located in London , United Kingdom and Sahibzada Ajit Singh Nagar, India.

    Industries
    Notable Project

    TMotions Global Ltd provides custom software development for a digital media company. They are responsible for updating the client's legacy systems and applications.

    "The team meets most of the deadlines."

  • 20
    $5,000+
    2 - 9 Employees
    Shrewsbury United Kingdom

    Wolf Logic Ltd. is a software firm founded in Shrewsbury, England with more than one expert. Since their founding in 2018, they have provided custom software development, web development, and enterprise app modernization solutions for small and mid-market firms.

    Clients
    Nidec Corporation
    Sheppee
    Carterwood
    Industries
    Notable Project

    Wolf Logic Ltd. developed an app for an electrical company. The app was to serve as an internal snagging list solution that could run on both laptops and mobile devices. Wolf Logic Ltd. understood the needs of the company as they worked on the project.

    “They are a team who seem to want to please and get things over the line.” - Owner, Electrical Company

  • 21
    $5,000+
    50 - 249 Employees
    London United Kingdom

    Techno Softwares is a technological services and consultancy company based in Jaipur, India, with offices in Petaling Jaya, Malaysia, and London. The company, founded in 2004, has more than 200 employees and provides custom software development, enterprise app modernization, mobile app development, application management & support, e-commerce development, web development, and application testing services. Techno Softwares serves small and larger-sized companies and industries in various industries that include e-commerce, automotive, and education.

    Clients
    BMW
    Audi
    WHO
    Tokio Marine
    Industries
    Notable Project

    An entertainment company hired Techno Softwares to develop their website and mobile application. Techno Softwares developed the website on WordPress and included customer account and e-store functionalities. Techno Softwares completed the project and the website and app met all expectations.

    "Their quality of work and quick turnaround time stands out." - Founder & Chairman, Entertainment Company

  • 22
    $25,000+
    10 - 49 Employees
    London United Kingdom

    Core Blue Ltd is a software engineering company based in London with an office in Plymouth, U.K. The company, founded in 2015, has a team of less than ten that provides custom software development, mobile app development, web development, and IoT development services to various companies.

    Clients
    Kuoni
    Move Mee
    Haulfryn
    PayPoint
    Industries
    Notable Project

    An online learning platform company hired Core Blue Ltd. to build their platform. As part of the engagement, Core Blue Ltd. did market research to identify the gap in the market and then designed the platform based on their findings. They developed the platform using a React framework, focusing on making the UX/UI friendly to the children who will be using the platform. The platform was completed and has been attracting a significant amount of traffic.

    "I was very impressed with the quality of their work. They clarified our ideas and made sure they knew exactly what we wanted." - Founder & Director, Online Learning Platform Company

  • 23
    $1,000+
    10 - 49 Employees
    London United Kingdom

    CrewNew.com is a web, software, design, and marketing agency based in London with offices in Tartu, Estonia and Kragujevac, Serbia. The agency, founded in 2006, has a team of more than ten that provides, among others, IT staff augementation, custom software development, and web development services to various companies and institutions.

    Notable Project

    A Software Development Firm hired CrewNew.com to build a white label team messaging software that could be used by the Firm's employees and customers. This software was intended to work like Slack but with lower running costs. CrewNew.com delivered the team-messaging software that works on Android, iOS, Windows, OSx, and Linux and worked very fast. As a result, the Firm was saving a lot of money because they're no longer using Slack.

    "CrewNew team is always using the best project management apps & tools." - CEO, Software Development Firm 

  • 24
    $10,000+
    2 - 9 Employees
    Darrington United Kingdom

    Tucanoo Solutions Ltd is a small custom software development company. They offer custom software development, enterprise app modernization, other application development, and web development and were launched in 2011.

    Industries
    Notable Project

    Tucanoo Solutions Ltd has developed a secure web platform for a money transfer company. They’ve created FAQ and email content, designed UI/UX, built the backend infrastructure, and provided hosting.

    "The quality of Tucanoo’s work is most impressive. That’s very important to us, especially in the financial aspect."

  • 25
    $5,000+
    2 - 9 Employees
    Northampton United Kingdom

    Full Metal Software is a bespoke software development agency located in Northampton, England. Founded in 2004, they have three employees specializing in full stack web development and innovative business solutions for small and midmarket companies, typically in business services, finance, and healthcare. Services include project management, code updating, CMS support, software development, and outsourcing.

    Clients
    Zanzibar Amber Resort
    YourGene Health
    Pastdrives Ltd
    Industries
    Notable Project

    Full Metal Software developed a baseBot molecular diagnostics platform for a biotechnology company to replace a legacy system built on Excel spreadsheets. They managed the project seamlessly, implementing internal ideas while sharing their own insights. Full Metal Software’s platform eliminated the need for multiple spreadsheets, delivering significant time-saving results to the client.

    “Project management has been very good. Although it’s like speaking two different languages between our computer and scientific backgrounds, they’ve worked really hard to implement our ideas. They’ve also pushed their own ideas that they know will benefit us.” – Research & Development Scientist, Biotechnology Company

  • 26
    $100,000+
    2 - 9 Employees
    London United Kingdom

    Cressoft Consultancy Limited is a management consulting company based in London with a team of fewer than five employees. Founded in 2011, they work with mid-market companies in the financial services, IT, and media companies to provide custom software development, e-commerce development, and enterprise app modernization. 

    Industries
    Notable Project

    In conjunction with an insurance underwriting company, Cressoft Consultancy Limited developed custom insurance writing software. They delivered a multi-technology project on time leveraging the most up-to-date solutions on the market. 

    "They met deadlines and delivered quality coding and testing. They are quick to respond to any issues." – Former Lead Engineer, Insurance Underwriting Company

  • 27
    $1,000+
    2 - 9 Employees
    London United Kingdom
    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.
    Industries
    Notable Project

    Digiscript Technologies was hired to develop a landing page for a real estate company. The client wanted to get more traffic on their website. 

    "They're very impressive in trying to meet all our demands."

  • 28
    $50,000+
    10 - 49 Employees
    London United Kingdom

    Founded in 2018, TEC DIGITAL LTD is a software development company based in London that primarily works with midmarket clients. They also provide blockchain, enterprise app modernization, and managed IT services. 

    Clients
    OCTO Trading Solutions AG
    Industries
    Notable Project

    TEC DIGITAL LTD developed an e-commerce web solution for a commodities trader. They delivered their work on time and exhibited a high-level of experience. 

    "The pricing is fair, and the team is reliable." – CSO, Commodities Trader

  • 29
    $5,000+
    10 - 49 Employees
    London United Kingdom
    Based in Seattle, Washington; San Fernando, Spain and London, United Kingdom, 47 Degrees is an enterprise app modernization company. The small team specializes in enterprise app modernization, BI & big data consulting & SI, cloud consulting & SI, and web development and was launched in 2010.
    Industries
  • 30
    $50,000+
    10 - 49 Employees
    Horsham United Kingdom

    Automation Squared Ltd is an app development company based in Horsham, England, with offices in Croydon, England; Brighton, England; and Pittsburgh. The 13-person team got started in 2007 and offers mobile app development, AI development, and enterprise app modernization.

    Clients
    GritWell
    Eva Emteq
    Stage Scripts Ltd
    Industries
    Notable Project

    Automation Squared Ltd built a cloud storage system for a theatrical publisher. The solution — developed in PHP and Laravel — replaced a Microsoft Access database with 50,000-100,000 records and improved processes. The new database saved the client and their customers time. 

    "Their ability to develop my product without a user requirement saved us time." – Managing Director, Theatrical Publisher

Tell us about your project
NEED HELP SELECTING A COMPANY?

Based on your budget, timeline, and specifications we can help you build a shortlist of companies that perfectly matches your project needs. Schedule a free consultation with a Manifest Analyst.

TELL US ABOUT YOUR PROJECT