Top 100 Software Development Companies in the United Kingdom
The Best of December 2025
Software development is essential in the modern world and continues to expand. All companies require an online presence, and establishing an attractive space on the internet is the initial move to remain competitive. A partner that guarantees seamless operation of background systems, contributing effectively to a brand's success, holds significance—strong development results in more opportunities and an increased likelihood of success.
The only problem modern companies face is finding such a partner. One with technical expertise and a deep understanding and insight into the company’s industry. This is why The Manifest created and curated a list of the top performers in the software development industry in the United Kingdom. Make sure to go through each option and read the user-contributed reviews about them. Choose the agency that best suits your company’s needs and requirements.
Jump to Most Reviewed Companies
List of the Best United Kingdom Software Developers
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1591$5,000+2 - 9 employeesLondon, EnglandNeam, an IT strategy consulting company, is in London, England. They specialize in IT strategy consulting and Custom Software Development and were launched in 2022.Read More
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1592$5,000+2 - 9 employeesLondon, EnglandLaunched in 2023, Algorise LTD is an IT strategy consulting company. The firm offers IT strategy consulting and Custom Software Development.Read More
Industries
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1593$1,000+2 - 9 employeesRochdale , EnglandINFO BPO is a custom software development firm. Based in Rochdale , England, the agency was launched in 2024. Their services include Custom Software Development and Web Development.Read More
Industries
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1594Undisclosed2 - 9 employeesLondon, EnglandFounded in 2024, Peonixis is a social media marketing agency. The small team focuses on Social Media Marketing and Content Marketing.Read More
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1595Undisclosed10 - 49 employeesGlasgow , ScotlandSoftware development company Markup was established in 2012. Located in Glasgow , Scotland, the team focuses on Custom Software Development and E-Commerce Development.Read More
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1596Undisclosed10 - 49 employeesEdinburgh , ScotlandAirts is a software development firm founded in 2013. The team provides Custom Software Development and Artificial Intelligence.Read More
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1597Undisclosed10 - 49 employeesEdinburgh , ScotlandCustom software development firm CriticalBlue Ltd was launched in 2001. The team specializes in Custom Software Development and Mobile App Development.Read More
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1598Undisclosed10 - 49 employeesBirmingham , EnglandBluetel is a custom software development firm. Their small team is based in Birmingham , England. Their services include Custom Software Development and CRM consulting and SI.Read More
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1599Undisclosed10 - 49 employeesLeeds , EnglandBased in Leeds , England, Action Prompt LTD is a small mobile application development firm. Their services include Mobile App Development and Custom Software Development.Read More
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1600Undisclosed10 - 49 employeesNottingham, EnglandGather Social is a social media marketing agency. Their small team is in Nottingham, England. Their services include Social Media Marketing and Custom Software Development.Read More
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1601Undisclosed10 - 49 employeesEdinburgh, ScotlandTopolytics is an Edinburgh, Scotland-based custom software development firm. They specialize in Custom Software Development and IT strategy consulting and were established in 2013.Read More
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1602Undisclosed10 - 49 employeesSouth Marston Industrial Estate, EnglandZPos Ltd, a software development company, provides Custom Software Development and Web Design. The firm is based in South Marston Industrial Estate, England.Read More
Industries
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1603$10,000+250 - 999 employeesStockton-on-Tees , EnglandVisualsoft, a custom software development firm, offer Custom Software Development and Conversion Optimization. They were established in 1998.Read More
Industries
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1604$10,000+250 - 999 employeesLondon, EnglandBack Office Outsourcing company Squiz offers Back Office Outsourcing and Custom Software Development. They were established in 1998.Read More
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1605Undisclosed250 - 999 employeesGlasgow, ScotlandIn Glasgow, Scotland, Horizon Interactive Ltd is a midsize software development company. Their services include Custom Software Development and E-Commerce Development.Read More
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1606Undisclosed250 - 999 employeesLondon, EnglandUser experience agency Software Country offers UX/UI Design and IT strategy consulting. They are based in Plymouth Meeting, Pennsylvania and London, England.Read More
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1607Undisclosed250 - 999 employeesLondon, EnglandIT staff augmentation company Hirexa Solutions is located in London, England and Amsterdam, Netherlands. Founded in 2015, the team focuses on IT staff augmentation and Custom Software Development.Read More
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1608Undisclosed250 - 999 employeesLondon, EnglandThoma Bravo is a software development company. They are in Chicago, Illinois and London, England and have midsize team. Their team offers Custom Software Development and Business Consulting.Read More
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1609Undisclosed250 - 999 employeesLondon, EnglandExactpro, an Application Testing company, was launched in 2009. The midsize team specializes in Application Testing and Custom Software Development.Read More
Industries
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1610Undisclosed250 - 999 employeesClifton upon Dunsmore, EnglandSEO agency WHY Global Services was established in 2009. Headquartered in Dublin, Ireland and Clifton upon Dunsmore, England, the team offers Search Engine Optimization and Pay Per Click.Read More
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1611Undisclosed250 - 999 employeesLondon, EnglandRED Global is a cloud consulting & SI company. The team is in London, England and Frankfurt am Main, Germany, and their services include cloud consulting & SI and Cybersecurity.Read More
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1612Undisclosed250 - 999 employeesRadcliffe, EnglandMidsize Digital Strategy company ISPG, is based in Radcliffe, England and Kochi, India. Their services include Digital Strategy and UX/UI Design.Read More
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1613$10,000+50 - 249 employeesVinnytsia, UkrainePlexteq, 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
Industries
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1614Undisclosed50 - 249 employeesEdinburgh , ScotlandNCR Edinburgh is a midsize software development firm in Edinburgh , Scotland. The team focuses on Custom Software Development and Web Development.Read More
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1615Undisclosed50 - 249 employeesBirmingham , EnglandCPiO Limited is a custom software development firm based in Birmingham , England. They provide Custom Software Development and Mobile App Development and were established in 1990.Read More
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1616$25,000+50 - 249 employeesWarszawa, PolandRead More
300Brains is a web development company. Their midsize team is in Warszawa, Poland; San Francisco, California and Kópavogur, Iceland. Their services include web development, custom software development, mobile app development, IT staff augmentation, and more.
Clients
Deutsche BörseIndustries
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1617Undisclosed50 - 249 employeesLondon, EnglandSolirius Consulting is a midsize London, England-based custom software development company. Their services include Custom Software Development and Business Consulting.Read More
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1618$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
Clients
Mio Amore West Bengal Pollution Control Board TagMango Fresh AisleIndustries
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1619Undisclosed10 - 49 employeesTheale, EnglandFounded in 2000, Automation Consultants is a cloud consulting & SI company. The team focuses on cloud consulting & SI and Custom Software Development.Read More
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1620$5,000+2 - 9 employeesLondon, EnglandAiiria is a software development company. Established in 2014, the firm is in London, England. Their services include Custom Software Development and IT managed services.Read More
Industries
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Check out a Software Developers in United Kingdom with the most new reviews in the past 12 months.
Most Reviewed
Software Developers
United Kingdom
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- 13 11 new reviews
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