Top 100 Application Modernization Companies in the United Kingdom

Need Help Selecting a Company?
Directory image
  1. Home
  2. App Modernization
  3. United Kingdom

Top 100 Application Modernization Companies in the United Kingdom

September 2023

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. 

Jump to Most Reviewed Companies

List of the Best United Kingdom Enterprise Application Modernization Services

  • 1
    • $25,000+
    • 50 - 249 employees
    • Croydon, United Kingdom

    Founded in 2005 and headquartered in Croydon, UK, GoodCore Software specializes in bespoke software development. WIth a team of about 50 employees, the company offers web and mobile app development to startups and established businesses alike. Engagement options include fixed- cost and dedicated development teams.

    Clients

    • Printed Music Licensing
    • Weight Loss Resources
    • GC Business Finance
    • XTracked Deliveries

    Industries

    Notable Project

    GoodCore developed a SaaS application for managing briefing programs and events for Fortune 100 companies. The team coded in React and Laravel for creating a web-based application. The application helped automate and streamline the management of corporate events, briefing programs and meetings.

    Visit Site
  • Get connected with a company for free

    Tell us about your project, and we'll match you with vetted companies that meet your requirements.

    Get Started
  • 2
    • Scheduling

      4.8
    • Quality

      4.9
    • Cost

      4.6
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $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.

    Industries

    Notable Project

    Instil Software wrote an observability software's code that integrated with an existing Java environment. They’ve since expanded their role to include Java development.

    "Great engineers are hard to find and the two we had working with us were clearly top-notch."

    Visit Site
  • 3
    • $10,000+
    • 10 - 49 employees
    • Wimborne, 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

    • Apex
    • Virgin Atlantic Airways
    • Ipes
    • Good Energy

    Industries

    Notable Project

    A telecommunications company has hired Transparity Ballard Chalmers to help them improve their business-critical integrations in order to provide enhanced reporting, monitoring, and alerting.

    "They will tell you realistically what you can expect."

    Visit Site
  • 4
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.8
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 2 - 9 employees
    • Farnham, United Kingdom

    Full Clarity is an expert team of UX designers and developers based in Farnham, England. Founded in 2018, the company provides trusted UX/UI design, web development, and mobile app development solutions for clients across various industries, ranging from education and healthcare to financial services, and from SME to household name companies. They design digital solutions which are data driven, user informed and designed to impact business goals.

    Clients

    • ITV
    • Feed it Back
    • Harrods
    • B Squared

    Industries

    Notable Project

    Full Clarity were engaged to deliver a significant step change in the user experience of the UK’s second largest ad platform for a major tv broadcaster over an 18 month period. They conducted deep user research, built new wireframes and high fidelity designs, and successfully delivered on all goals whilst managing multiple complex stakeholders.

    “The techniques used to find the correct design solution were very impressive. They used a variety of techniques. In discovery work, they would always listen carefully”

    Visit Site
  • 5
    • Scheduling

      4.5
    • Quality

      4.9
    • Cost

      4.3
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $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
    • Investec Asset Management
    • ateb
    • Welsh Government

    Industries

    Notable Project

    Box UK developed two websites for an electronic and industrial components distributor. The websites would serve as the core ordering platform for the company's markets in Indonesia and Vietnam.

    "Box UK navigated the extremely complex internal environment and was able to get the project fully implemented quickly."

    Visit Site
  • 6
    • Scheduling

      4.3
    • Quality

      4.7
    • Cost

      4.2
    • NPS

      4.9
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 250 - 999 employees
    • London, United Kingdom

    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.

    Clients

    • The BBC
    • David Lloyd Clubs
    • RSA
    • The Cabinet Office

    Industries

    Notable Project

    A property portal company has collaborated with Softwire for custom software development using React, Java, and more. They manage product research, MVP creation, launching process, and various optimization. 

    "They operate independently and raise issues only when necessary."

    Visit Site
  • 7
    • Scheduling

      4.8
    • Quality

      4.8
    • Cost

      4.8
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $100,000+
    • 50 - 249 employees
    • London, United Kingdom

    Elsewhen, a midsize software development firm, is located in London, United Kingdom. Their services include custom software development, enterprise app modernization, IT strategy consulting, business consulting, and more.

    Industries

    Notable Project

    A transportation company hired Elsewhen to develop and design a microsite. The team was responsible for implementing a CO2 calculation feature, prototyping, testing, and graphic design.

    "Very satisfied with the results, and I wouldn't hesitate to continue working with Elsewhen again."

    Visit Site
  • 8
    • $10,000+
    • 2 - 9 employees
    • WOLVERHAMPTON, United Kingdom

    KSB Technologies is a custom software development company. The small WOLVERHAMPTON, United Kingdom-based team focuses on custom software development, web development, IT strategy consulting, cloud consulting & SI, and more. The agency was founded in 2021.

    Clients

    • DFE
    • Hiscox
    • ESFA
    • AutoFlow

    Notable Project

    KSB Technologies developed a CRM from scratch using Laravel for a SaaS company. They combined tools and features to make communication smoother, covering things like payment records, royalties, and invoicing.

    "Remarkably, their cost-effectiveness and adept time management underscored their performance."

    Visit Site
  • 9
    • Scheduling

      4.9
    • Quality

      5.0
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $50,000+
    • 50 - 249 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
    • Story Homes
    • AESSEAL
    • ADM Agriculture

    Industries

    Notable Project

    Audacia developed an online platform for a mortgage lender. The platform automated the client's end-to-end processes; it automated loan repayment calculations and eliminated manual-based processes.

    "Communication was very good and consistent throughout the project, benefiting from tight feedback loops."

    Visit Site
  • 10
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.8
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 2 - 9 employees
    • London, United Kingdom

    Software development firm KosmosKod was launched in 2022. Located in London, United Kingdom, their small team provides custom software development, mobile app development, web development, enterprise app modernization, and more.

    Industries

    Notable Project

    KosmosKod has developed a comprehensive online booking system and website for a water sports and events company. The team has also integrated back-office tools and a calendar into the system.

    "Overall, we describe their project management as highly professional and customer-focused."

    Visit Site
  • 11
    • Scheduling

      4.7
    • Quality

      4.8
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • Chobham, United Kingdom

    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.

    Clients

    • R;pple Suicide Prevention
    • Entoli Medical
    • Vivup
    • AVC Wise

    Industries

    Notable Project

    Blue Tea Software - London has created a browser extension for a nonprofit organization. Their goal was to create an intuitive, eye-catching plugin that redirected users to gain mental health support. 

    "They have impressive people with unique ethos and values to do the right thing."

    Visit Site
  • 12
    • Scheduling

      4.2
    • Quality

      4.8
    • Cost

      4.5
    • NPS

      4.7
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 50 - 249 employees
    • London, United Kingdom

    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

    Notable Project

    A streaming services company hired esynergy for cloud and cybersecurity services. They hosted their servers on AWS, took care of coding, and created a high-security password vault, among other tasks.

    ''All outcomes and goals that were set at the beginning of the project were fully met.''

    Visit Site
  • 13
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 10 - 49 employees
    • Newquay, United Kingdom

    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.

    Clients

    • Sky
    • Vodafone UK
    • The Crown Estate
    • Invictus Games

    Industries

    Notable Project

    flowmoco was hired by a hospitality and leisure company to develop three beach safety MVP platforms within 16 weeks. The team integrates real-time data with the Royal National Lifeboat Institution.

    "They believed in the project and in me!"

    Visit Site
  • 14
    • Scheduling

      4.8
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 2 - 9 employees
    • London, United Kingdom
    Daynt, a software development firm, was launched in 2020. Their small team is located in London, United Kingdom. The company specializes in custom software development, web development, mobile app development, application management & support, and more.

    Industries

    Notable Project

    Daynt developed an iOS, Android, and web app marketplace for a property management professionals network. They implemented features for user management, searching, job posting, quoting, payments, and reporting.

    "Their deep understanding of our specific needs allowed them to provide tailored solutions."

    Visit Site
  • 15
    • Scheduling

      4.2
    • Quality

      4.5
    • Cost

      4.3
    • NPS

      4.7
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 50 - 249 employees
    • London, United Kingdom

    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

    • Audi
    • De Beers
    • Hive
    • The Economist

    Industries

    Notable Project

    Somo designed an app, beginning with demo videos to act as a proof of concept and moving into wireframes; the in-house development team finished the product. Somo was also involved in overall mobile strategy.

    "They know the market. They live and breathe mobile, and they just know it all. They’re very creative and innovative."

    Visit Site
  • 16
    • Scheduling

      4.5
    • Quality

      5.0
    • Cost

      4.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $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 Group
    • HP
    • Carlsberg
    • De Beers

    Industries

    Notable Project

    Seb Azzo developed all aspects of a cloud-enabled brand guideline sharing and storage technology. They’re continuing their work with their partner to optimize the solution.

    “They have the product’s best interests at heart, pushing it to make sure we’re getting a quality end result.”

    Visit Site
  • 17
    • $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
    • Health Navigator
    • Sheppee
    • Carterwood

    Industries

    Notable Project

    Wolf Logic Ltd. transitioned disparate datasets into a larger online portal that uses AWS. The data contained asset locations, financial data, and geospatial data.

    "They were very engaging throughout the timeline and reactive to our priorities."

    Visit Site
  • 18
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 10 - 49 employees
    • Otford, United Kingdom

    Ecce. Is a small web design agency in Otford, United Kingdom. They provide web design, branding, e-commerce development, mobile app development, and more and were established in 1999.

    Industries

    Visit Site
  • 19
    • $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

    • Barclays
    • Investec Asset Management
    • M & G
    • Prudential

    Industries

    Notable Project

    Dedicated members of the Atlas team worked to develop a new and mobile-optimized quoting solution that can handle a complex pricing model and allows for greater customer support.

    "The cleverness displayed by Atlas really gave us confidence in knowing that they would deliver."

    Visit Site
  • 20
    • $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

    • YourGene Health
    • Pastdrives Ltd
    • Zanzibar Amber Resort

    Industries

    Notable Project

    Full Metal Software helped a digital creative agency with a data migration project for one of their end clients. They were responsible for taking data from Umbraco and transforming it into a workable format.

    “We didn't have any expectations going into the project, and we were very satisfied with what we received.”

    Visit Site
  • 21
    • Scheduling

      4.0
    • Quality

      4.5
    • Cost

      4.3
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $250,000+
    • 10 - 49 employees
    • Brigton, 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

    • HCA
    • BP Passport
    • Breathe HR
    • Link My Ride

    Industries

    Notable Project

    Automation Squared augmented an internal hardware team to create AI applications. One allowed data to be gathered from videos and shared among users, while another used the same framework to create data visualizations.

    "They're very experienced and offered the right solutions."

    Visit Site
  • 22
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $25,000+
    • 10 - 49 employees
    • London, United Kingdom

    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

    Notable Project

    A weekly magazine company hired aleios for a development project. They wrote serverless processes to create XML feeds from the firm's CMS. The CEO, a senior architect, and a developer worked on the project. 

    "aleios has a confident and energetic approach to working with their clients that instills maximum trust."

    Visit Site
  • 23
    • $10,000+
    • 2 - 9 employees
    • London, United Kingdom

    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.

    Industries

    Notable Project

    A food wellness company hired inCode Systems to develop a digital experience for their sales team. The vendor designed the site with WordPress.

    "They were very professional, went out of their way to help with ideas, and accommodated our demands."

    Visit Site
  • 24
    • $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 Foxall Ltd developed an online tool to help customers to find the correct product solution for their requirements. They ran tests and took feedback from the client to fix any bugs before launch.

    "We found working with Langley Foxall to be very easy."

    Visit Site
  • 25
    • $10,000+
    • 2 - 9 employees
    • Guilden Morden, United Kingdom

    Crowers Limited, a custom software development company, is based in Guilden Morden, United Kingdom. The company specializes in custom software development, mobile app development, web development, web design, and more and has a small team.The company was founded in 2017.

    Clients

    • Xylem
    • to.co
    • CHUMS

    Notable Project

    Crowers Digital has developed an Android and iOS mobile application for a traveling fairground trade association. Currently, the team handles the app’s maintenance and addresses any bugs that come up.

    “They get back to us almost instantly when we email them.”

    Visit Site
  • 26
    • $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."

    Visit Site
  • 27
    • Scheduling

      4.8
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Allmatics is a software development company headquartered in Kyiv, Ukraine. They were founded in 2018 and have about 3 teammates. They focus on custom software, web, and mobile app development projects for small businesses and midmarket firms in the healthcare and medical, business services, and e-commerce industries.

    Industries

    Notable Project

    Allmatics finished developing a web-based portal using PHP languages and Java Script. This involved automating and custom-creating features associated with patient results and enrollment.

    "They were very professional and patient with me when I didn’t understand the process."

    Visit Site
  • 28
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Softexpoit Pvt. Limited, a mobile application development company, was founded in 2021. The small London, United Kingdom-based team specializes in mobile app development, custom software development, other application development, application management & support, and more.

    Clients

    • Framers Group Sarl Switzerland
    • Ironhand S. A. USA
    • Yoru Portal UAE
    • Take1ads USA

    Industries

    Visit Site
  • 29
    • $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 delivered a web solution that allows users to buy and sell commodities online. They integrated the development with blockchain technology and a third party financial partner. 

    "The deliver the product on time and have a lot of relevant experience."

    Visit Site
  • 30
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom
    Established 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.

    Notable Project

    Captivate Solutions Tech Ltd helped a workplace management solutions company migrate their app platform to Kubernetes. Additionally, they refactored certain apps from Node.js to TypeScript.

    "They were very responsive."

    Visit Site

Get connected with the right company for you

We'll do the work for you – finding and connecting you with service providers that meet your exact requirements.

Schedule Consultation