Top 100 Cross Platform App Developers in London
The Best of May 2026Looking for a top cross platform mobile app development company in London?
Cross-platform mobile applications have benefits that outweigh those of native applications if your users interact with your business on both Android and Apple products. Cross platform app development entails building a mobile app that’s compatible with multiple operating systems. Cross-platform, or hybrid apps, use a single codebase, which means you don’t need separate apps with separate technologies to appeal to customers using Android or iOS. Because of this single codebase, cross platform apps are less costly to create and maintain.
Most hybrid apps will use either Ionic or React as a development framework. React is a JavaScript framework that allow apps to support Android and iOS natively, while Ionic uses JavaScript, HTML5, CSS, and Sass for hybrid apps, desktop apps, and progressive web apps. Choosing an app developer with the right skillset to fit the technology framework your app needs is a good place to start when interviewing app development companies.
To assist you in your search for a partner, we’ve compiled this list of the top cross platform app developers in London. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best London Cross Platform Mobile App Development Companies
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331$10,000+50 - 249 employeesLondon, EnglandPlexteq, a custom software development company, was established in 2014. Headquartered in Vinnytsia, Ukraine; Tallinn, Estonia and London, England, their midsize team provides Custom Software Development, Enterprise App Modernization, DevOps Managed Services, BI & big data consulting & SI, and more.Read More
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332$5,000+10 - 49 employeesGreat Baddow, EnglandRead More
Objective is a software development firm. The small Great Baddow, United Kingdom-based team provides custom software development, BI & big data consulting & SI, Artificial Intelligence, conversion optimization, and more. The agency was launched in 1987.
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EpsonIndustries
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333$1,000+2 - 9 employeesLondon, EnglandLaunched in 2025, Viorix digital solutions is a SEO company. The agency offers Search Engine Optimization, UX/UI Design, Web Development, Mobile App Development, and more and has a small team.Read More
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334$5,000+2 - 9 employeesLondon, EnglandEngineer Box, a cloud consulting & SI company, was founded in 2023. They are based in London, United Kingdom and have a small team. Engineer Box provides cloud consulting & SI, web development, mobile app development, and application testing.Read More
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335$5,000+Freelancer employeesLondon, EnglandLiberateWeb, a SEO services firm, is located in London, England. They provide Search Engine Optimization and Pay Per Click and were launched in 2024.Read More
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336$10,000+10 - 49 employeesLondon, EnglandLaunched in 2021, Flipside Health is a branding agency. The team specializes in Branding and Market Research and is located in London, England.Read More
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337$1,000+2 - 9 employeesHarlow, EnglandRead More
Fintek Software is a Harlow, United Kingdom-based custom software development company. The small firm was founded in 2014. Their team provides custom software development, web development, mobile app development, and other application development.
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338$1,000+10 - 49 employeesWindsor, EnglandRead More
Located in Mississauga, Canada and Kolkata, India, Primary Infotech Private Limited is an app development firm. The small company was founded in 2019. Their services include mobile app development, web design, and e-commerce development.
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339$10,000+10 - 49 employeesRoyal Tunbridge Wells, EnglandRead More
Chilliapple Ltd., a mobile app development company, was launched in 2008. The small team specializes in mobile app development, e-commerce development, custom software development, and web development. The company is based in Kent, United Kingdom and , United Kingdom.
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QuickvitIndustries
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340$5,000+250 - 999 employeesSlough, EnglandSoftoo is an IT staff augmentation company. The Slough, England-based agency specializes in IT staff augmentation and Custom Software Development.Read More
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ConfigureIndustries
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341Undisclosed2 - 9 employeesMiddlesex, EnglandHaley IT Services (LABH UK Ltd), an user experience design company, was launched in 2011. The company offers UX/UI Design and BI & big data consulting & SI, and is small.Read More
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342$25,000+50 - 249 employeesStevenage, EnglandRead More
LAYOUTindex is a small e-commerce development company. They offer e-commerce development, mobile app development, web development, custom software development, and more and were founded in 2009. The agency is in Madison, Alabama; Paris, France and Colombo, Sri Lanka.
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343$5,000+10 - 49 employeesGuildford, EnglandEquals Collective, a small user experience design company, is in Guildford, England. The team focuses on UX/UI Design and E-Commerce Development.Read More
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344$10,000+10 - 49 employeesLondon, EnglandFleapo, a software development firm, was launched in 2015. Their small team is based in London, England; Tallinn, Estonia; Singapore and Toronto, Canada and focuses on Custom Software Development, Mobile App Development, Artificial Intelligence, IT strategy consulting, and more.Read More
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Mio Amore West Bengal Pollution Control Board TagMango Fresh AisleIndustries
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345Undisclosed10 - 49 employeesLondon, EnglandM A Q Computer Services L.L.C is a small social media marketing agency established in 2013. Their team focuses on Social Media Marketing and Search Engine Optimization.Read More
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346$5,000+2 - 9 employeesWindsor, EnglandBlackStone Associates - Technical Support Services is an unified communications consulting & SI company. Their team offers unified communications consulting & SI.Read More
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347Undisclosed2 - 9 employeesAscot, EnglandElios Technology Limited is a custom software development firm. They were established in 2018, and their services include Custom Software Development and DevOps Managed Services.Read More
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348$10,000+10 - 49 employeesHitchin, EnglandEstablished in 2014, Insites Digital is a web design company. The team specializes in Web Design and UX/UI Design and is based in Hitchin, England.Read More
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349$5,000+2 - 9 employeesWarfield, EnglandFounded in 2019, VersionMaybe. Is a small Warfield, England-based app development company. Their team provides Mobile App Development and Web Development.Read More
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350Undisclosed50 - 249 employeesTaplow, EnglandLaunched in 2009, NHZ Global is a social media marketing firm. The company offers Social Media Marketing and Search Engine Optimization.Read More
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351$25,000+50 - 249 employeesReading, EnglandWorth Digital is a web design agency. They are in Reading, England and Rijswijk, Netherlands. Their team provides Web Design and UX/UI Design.Read More
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352$5,000+10 - 49 employeesCrawley, EnglandAJ Nodes, a custom software development firm, was founded in 2016. The company focuses on Custom Software Development and Web Development.Read More
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353$5,000+10 - 49 employeesFarnham, EnglandWebol, a software development company, was established in 2019. The company focuses on Custom Software Development, Mobile App Development, Artificial Intelligence, and Web Development and has a small team.Read More
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In general we work with businesses that have been impacted by change and need to respond using technology.Industries
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354Undisclosed2 - 9 employeesHigh Wycombe, EnglandGenetic Digital is a SEO services firm founded in 2011. The agency specializes in Search Engine Optimization and Web Development.Read More
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355Undisclosed10 - 49 employeesLuton, EnglandGMS Technology Ltd is a Digital Strategy company founded in 2006. The small team provides Digital Strategy and E-Commerce Development.Read More
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356$10,000+2 - 9 employeesGuilden Morden, EnglandRead More
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.
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XylemIndustries
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357$10,000+250 - 999 employeesGillingham, EnglandRead More
SAPPHIRE SOFTWARE SOLUTIONS, an application development firm, was founded in 2002. Their midsize team is in Coral Springs, Florida; Glendalough, Australia; Calgary, Canada and Coral Springs, Florida and offers Mobile App Development, Artificial Intelligence, Search Engine Optimization, Custom Software Development, and more.
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American Express L'Oréal MG Motors AlmaraiIndustries
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358$5,000+2 - 9 employeesFarnham, EnglandFounded in 2020, Crockwell Solutions is a small software development company. Their services include Custom Software Development and cloud consulting & SI.Read More
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359$1,000+2 - 9 employeesStokenchurch, England5G Digital Ltd is a web design company. They were launched in 2017 and specialize in Web Design and E-Commerce Development.Read More
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360$10,000+10 - 49 employeesBrighton and Hove, EnglandDabApps is a small custom software development firm. Based in Brighton and Hove, England and Cardiff, Wales, the company was founded in 2010. Their services include Custom Software Development, Web Development, Mobile App Development, and UX/UI Design.Read More
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LODIndustries
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