Top 100 Systems Integrator Companies in the United Kingdom
The Best of November 2026List of the Best United Kingdom System Integrators
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241$5,000+2 - 9 employeesBirmingham, EnglandRead More
Appcentric is a web development company. Founded in 2013, the small firm is headquartered in Birmingham, United Kingdom. Their services include web development, mobile app development, ux/ui design, and product design.
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GAMEIndustries
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242$5,000+10 - 49 employeesLondon, EnglandData Never Lies is a big data analytics company. They are headquartered in London, England; New York, New York; Irvine, California and Pyrmont, Australia and have a small team. Their services include BI & big data consulting & SI.Read More
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243Undisclosed50 - 249 employeesLisburn, Northern IrelandXperience is a cloud consulting & SI company. The team focuses on cloud consulting & SI and CRM consulting and SI and is located in Lisburn, Northern Ireland.Read More
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244$10,000+10 - 49 employeesLeeds, EnglandRead More
Founded in 2010, NewRedo Ltd. is a software development company headquartered in Leeds, England. Their team of under 10 serves businesses of all sizes in industries such as healthcare, financial services, and government. Services include custom software development, IT managed services, and mobile app development.
Clients
RaceBestIndustries
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245$10,000+2 - 9 employeesLondon, EnglandRead More
TAR Solutions is a big data consulting firm based in London with a team of fewer than 10 members. Founded in 2014, they are experts in big data consulting and Si for mid-market and enterprise-level clients, primarily in the field of financial services.
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BNP ParibasIndustries
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246$5,000+50 - 249 employeesLondon, EnglandWavex Technology Ltd, an IT managed services company, was established in 1998. The firm offers IT managed services, cloud consulting & SI, IT strategy consulting, Cybersecurity, and more and has a midsize team. The firm is in London, England.Read More
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247$10,000+1,000 - 9,999 employeesBourne End, EnglandRead More
Pomeroy is an IT infrastructure solutions company based in Hebron, KY, with offices in Bourne End, UK, Pittsburgh, PA, and New York. Since it was founded in 1982, the team has grown to over 3,00 employees. Pomeroy provides IT managed services, non-voice BPO/back office services, and cybersecurity capabilities.
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248Undisclosed2 - 9 employeesLondon, EnglandBig data company TagDataTrust was founded in 2017. The small team focuses on BI & big data consulting & SI, IT strategy consulting, digital strategy, conversion optimization, and more. The company is headquartered in London, United Kingdom.Read More
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249Undisclosed10 - 49 employeesLondon, EnglandLocated in San Francisco, California and London, England, SyntraETL is a small IT managed services company. Established in 2024, the team focuses on IT managed services, AI Agents, AI Consulting, cloud consulting & SI, and more.Read More
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250$1,000+2 - 9 employeesLondon, EnglandMetis BI is a big data analytics company launched in 2024. The agency specializes in BI & big data consulting & SI and has a small team.Read More
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251$5,000+2 - 9 employeesHarrow, EnglandRead More
Testdel UK Ltd. Is a small application testing company. Launched in 2015, the team provides application testing, IT managed services, IT strategy consulting, and other IT consulting and SI. The firm is located in Harrow, United Kingdom and Chandigarh, India.
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252$1,000+10 - 49 employeesLondon, EnglandRead More
Helpdesk Heroes is an IT managed services company. The small London, United Kingdom-based agency was launched in 2016. Their team focuses on IT managed services, cybersecurity, other IT consulting and SI, and IT staff augmentation.
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253$50,000+10 - 49 employeesLondon, EnglandFounded in 2023, Opstergo is a cloud consulting & SI company. The small Zagreb, Croatia-based team specializes in cloud consulting & SI, devops managed services, and cybersecurity.Read More
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254Undisclosed10 - 49 employeesLondon, EnglandRead More
SmallGiants is a web development firm in London, United Kingdom. The small firm was founded in 2018. Their team provides web development, ux/ui design, application management & support, advertising, and more.
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255$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
Clients
AVI-SPLIndustries
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256$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.
Clients
Easy Living MobilityIndustries
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257$5,000+1,000 - 9,999 employeesLondon, EnglandInteroute Communications is an IT managed services company. They are based in London, England and Nottingham, England, and their services include IT managed services and other IT consulting and SI.Read More
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258$5,000+1,000 - 9,999 employeesSheffield, EnglandInsight is an IT managed services company. Located in Sheffield, England, the company focuses on IT managed services and cloud consulting & SI.Read More
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259Undisclosed1,000 - 9,999 employeesLondon, EnglandEstablished in 2014, Cloud4C is an IT managed services company. The agency offers IT managed services and cloud consulting & SI, and is large.Read More
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260Undisclosed250 - 999 employeesCity of London, EnglandIn City of London, England and Birmingham, England, Computer Futures is a cloud consulting & SI company. Founded in 1986, the team provides cloud consulting & SI and CRM consulting and SI.Read More
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261Undisclosed1,000 - 9,999 employeesLondon, EnglandK2 Partnering Solutions is a CRM consulting and SI company. They are headquartered in London, England, and their services include CRM consulting and SI and ERP consulting and SI.Read More
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262Undisclosed2 - 9 employeesManchester, EnglandRead More
CyberPal is a Microsoft consulting partner based in Manchester, United Kingdom. Founded in 2019, their fresh team of 3–4 employees serves small to mid-sized clients across a range of industries. They focus on CRM consulting and system integrations, but they also provide web and mobile app development.
Clients
Elysium Experiences -
263$10,000+10 - 49 employeesLondon, EnglandProlaxies is a London, England-based mobile application development company. The small team provides Mobile App Development, Artificial Intelligence, UX/UI Design, BI & big data consulting & SI, and more and was launched in 2023.Read More
Clients
Precision Evolution GlobalIndustries
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264$10,000+10 - 49 employeesLondon, EnglandRead More
Brightblue Consulting is a London-based marketing consultancy. Founded in 2012, they have about 22 employees that do digital strategy, BI and SI, and big data consulting. They serve clients in the advertising, marketing, business services, and financial services industries.
Clients
AbellioIndustries
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265$1,000+10 - 49 employeesLondon, EnglandRead More
SonicFast is a hosting solutions provider founded in 2015 in London and with about 5 employees on board. Their main services include cybersecurity, cloud consulting and systems integration, IT managed services, and business intelligence. They mostly cater to small businesses in telecommunications, IT, and gaming industries.
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266Undisclosed2 - 9 employeesSheffield, EnglandHyperscale Consulting is a Cybersecurity company. Established in 2025, the team offers Cybersecurity, cloud consulting & SI, and DevOps Managed Services. Their small agency is Sheffield, England-based.Read More
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267$25,000+10 - 49 employeesLondon, EnglandFounded in 2016, Forsyth Barnes Consultancy is a business intelligence company. The team focuses on BI & big data consulting & SI and cloud consulting & SI.Read More
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268$10,000+10 - 49 employeesNewcastle upon Tyne, EnglandLeaf is a business intelligence company located in Newcastle upon Tyne, England. The small team offers BI & big data consulting & SI, E-Commerce Development, Ecommerce Marketing, Performance Marketing, and more and was launched in 2014.Read More
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269Undisclosed50 - 249 employeesShenley Wood, EnglandEstablished in 2005, Mercurius IT LTD is a midsize Shenley Wood, England-based ERP consulting and SI company. Their team offers ERP consulting and SI and CRM consulting and SI.Read More
Clients
Survitec Group Wescom Group Sopheon The Una GroupIndustries
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270$1,000+2 - 9 employeesWembley, EnglandVUPAX Solutions Limited, an user experience design company, was founded in 2025. Their small team is based in Wembley, England. Their services include UX/UI Design, cloud consulting & SI, Cybersecurity, Custom Software Development, and more.Read More
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