Top 100 Cross Platform App Developers in the United Kingdom
The Best of December 2025Looking for a top cross platform mobile app development company in the United Kingdom?
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 United Kingdom. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best United Kingdom Cross Platform Mobile App Development Companies
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241$10,000+50 - 249 employeesLondon, EnglandUbistart is a London, England-based software development company. They provide Custom Software Development and Mobile App Development and were launched in 2016.Read More
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242$10,000+50 - 249 employeesLondon, EnglandRead More
4xxi is a web and mobile development company headquartered in London, UK with satellite offices in Saint Petersburg and Saransk, Russia. 4xxi's team of 50+ employees provides web development, mobile app development, and custom software development services to startups, mid-market businesses, and enterprises alike. They also have a diverse industry presence, working with healthcare, financial services, and education firms.
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FIFAIndustries
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243$100,000+50 - 249 employeesLondon, EnglandRead More
Founded in 2009, Mubaloo is a mobile app developer and IT strategy consultancy based in London. Also working from their Bristol office, this award-winning team of 50+ creates digital solutions for both enterprises and smaller companies.
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AmazonIndustries
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244$50,000+50 - 249 employeesLondon, EnglandRead More
Ignitho Technologies is a New York-based digital technology solutions company founded in 2013. Their team of 55 employees specializes in custom software development and IT services. Their clients are typically midmarket businesses in the financial services, retail, and hospitality industries.
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Talent IntelligenceIndustries
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245$10,000+10 - 49 employeesLondon, EnglandRead More
Door 105 is a mobile application development company headquartered in London. They have about 1 team member and provide mobile app development, mobile and app marketing, and SEO services.
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Hartleys Store -
246$10,000+10 - 49 employeesLondon, EnglandRead More
Codepunch Ltd is a London, United Kingdom-based mobile application development firm. The small team specializes in mobile app development, web development, custom software development, web design, and more. The company was launched in 2022.
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247$10,000+10 - 49 employeesWatford, EnglandCustom software development company Wirebox Ltd is based in Watford, England and Milton Keynes, England. They offer Custom Software Development, Mobile App Development, Web Development, E-Commerce Development, and more and were launched in 2005.Read More
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248$100,000+50 - 249 employeesLondon, EnglandInfinity Technologies is a midsize custom software development firm. The London, England-based company was founded in 2003. Their services include Custom Software Development, Web Development, Mobile App Development, and IT staff augmentation.Read More
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249$10,000+2 - 9 employeesLondon, EnglandRead More
The Beaverhead Ltd is a London-based development studio. Founded in 2014, their team of fewer than 10 specializes in custom software, mobile app, and web development services. They primarily serve small to midmarket businesses.
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Big Lazy PandaIndustries
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250$1,000+10 - 49 employeesBROMLEY, EnglandRead More
CreativeG is a software company founded in Bromley, England with more than 10 employees. They specialize in mobile app development, web development, and UX/UI design solutions for small businesses in the fields of consumer products, retail, and IT.
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FindhelpIndustries
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251$10,000+10 - 49 employeesLondon, EnglandOnekode, Software Development Company is an application development firm launched in 2023. The company focuses on Mobile App Development, Low/No Code Development, Web Development, Web Design, and more and has a small team. The company is located in Islamabad, Pakistan and London, England.Read More
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Ayjynt Vanalyzer Capstone Real Estate Trelix – A Heavy Machinery Rental PlatformIndustries
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252$1,000+2 - 9 employeesLondon, EnglandSmall user experience design agency Exline Labs, is based in Trincomalee, Sri Lanka and London, England. Established in 2023, the team specializes in UX/UI Design, Web Development, Mobile App Development, Custom Software Development, and more.Read More
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253$10,000+50 - 249 employeesLondon, EnglandRead More
Located in London, United Kingdom and Lahore, Pakistan, Devbox is a web development company. The midsize agency was founded in 2011. Their team focuses on web development, custom software development, IT staff augmentation, mobile app development, and more.
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254$5,000+2 - 9 employeesSlough, EnglandWeb Magnetism Ltd is a web design agency. Founded in 2023, the small firm is based in Slough, United Kingdom. Their services include web design, mobile app development, search engine optimization, and pay per click.Read More
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255$1,000+2 - 9 employeesWare, EnglandRead More
Heavy Penguin is a digital web agency founded in 2010. Based in Ware, United Kingdom, the team specializes in web development, eCommerce development, and UX/UI design. They primarily serve clients in the eCommerce, government, and consumer products and services agencies. Heavy Penguin designed and developed a corporate website for a landscaping and building company, helping them showcase their work and attract clients. The team also implemented email and contact capabilities.
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ArgosIndustries
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256$1,000+10 - 49 employeesBelfast, Northern IrelandRead More
The House Of Code is a mobile app development company. Established in 2019, the small agency is located in Belfast, United Kingdom and Kraków, Poland. Their services include mobile app development, custom software development, web development, and other IT consulting and SI.
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257$5,000+2 - 9 employeesShipston on Stour, EnglandRead More
24 Development is an app development firm based in the United Kingdom. Founded in 2017, their team of around three employees provides mobile, web, and custom app development services.
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GreatorIndustries
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258$5,000+2 - 9 employeesAldermaston, EnglandEstablished in 2018, Peslo Studios Ltd is a mobile application development company. Based in Aldermaston, England, the team specializes in Mobile App Development and Web Development.Read More
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ev.energy Zilch PerchPeek TreecardIndustries
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259$10,000+10 - 49 employeesLondon, EnglandRead More
Aegasis Labs is an artificial intelligence company. The small team is in London, United Kingdom. Their services include Artificial Intelligence, custom software development, BI & big data consulting & SI, blockchain, and more.
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260$1,000+10 - 49 employeesManchester, EnglandRead More
DEVSTUDIO TECHNOLOGIES LTD is a software development company in Huddersfield, United Kingdom and Lahore, Pakistan. The small company was founded in 2018. Their services include custom software development, web development, mobile app development, web design, and more.
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261Undisclosed10 - 49 employeesLondon, EnglandLaunched in 2022, EliteWebHub is a digital strategy company. Located in Ahmedabad, India and London, United Kingdom, their small team focuses on digital strategy, ux/ui design, web development, mobile app development, and more.Read More
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262$1,000+50 - 249 employeesHarrow, EnglandUnikove Technologies is a software development company. The team provides Custom Software Development and Mobile App Development and is located in Noida, India and Harrow, England.Read More
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ScholasticIndustries
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263$10,000+10 - 49 employeesLondon, EnglandRead More
Motzheim Development is a San Francisco, California-based mobile app development company. The small company was established in 2023. Their team provides mobile app development, ux/ui design, custom software development, web development, and more.
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264$5,000+2 - 9 employeesLondon, EnglandHeadquartered in London, United Kingdom, Deca is a small IT staff augmentation company. Launched in 2024, the team provides IT staff augmentation.Read More
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265$10,000+10 - 49 employeesStafford, EnglandRead More
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.
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Easy Living MobilityIndustries
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266$25,000+10 - 49 employeesLondon, EnglandRead More
Wishu Labs is a social media marketing firm. They are located in London, United Kingdom and have a small team that specializes in social media marketing, email marketing, search engine optimization, ux/ui design, and more. The company was founded in 2023.
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267Undisclosed2 - 9 employeesLondon, EnglandUseCodify is a small Berlin, Germany-based web development firm. They specialize in Web Development, Business Consulting, Mobile App Development, and Low/No Code Development and were established in 2023.Read More
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268$1,000+50 - 249 employeesSheffield, EnglandStarklightechnology company is a custom software development company located in Sheffield, United Kingdom and Sheffield, United Kingdom. The midsize agency was established in 2021. Their team offers custom software development, mobile app development, web development, IoT development, and more.Read More
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269$5,000+10 - 49 employeesKington, EnglandPenguinsite is a software development firm. They are based in Kington, England and have a small team that provides Custom Software Development, Mobile App Development, E-Commerce Development, and Artificial Intelligence. The company was founded in 2018.Read More
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270Undisclosed2 - 9 employeesBournemouth, EnglandRead More
Established in 2008, Dorset Creative is a custom software development company. They are based in , and Bournemouth, United Kingdom and have a small team. Their services include custom software development, AR/VR development, mobile app development, ux/ui design, and more.
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