Top 100 Systems Integrator Companies in London

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Top 100 Systems Integrator Companies in London

The Best of June 2026
Jump to Most Reviewed Companies

List of the Best London System Integrators

  • 91
    (8 Reviews) 4.8

    Timeliness

    4.8

    Service Excellence

    4.8

    Value

    4.8

    Would Recommend

    4.9
    $25,000+
    50 - 249 employees
    London, England

    Software development company Pretius is located in Warszawa, Poland. They offer custom software development, IT staff augmentation, enterprise app modernization, and IT managed services and were established in 2006.

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    Industries

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  • 92
    (8 Reviews) 4.9

    Timeliness

    4.4

    Service Excellence

    4.8

    Value

    4.6

    Would Recommend

    5.0
    $50,000+
    10 - 49 employees
    London, England

    iWeb is an e-commerce agency that is based in Stafford, United Kingdom. Since 1995, its team of more than 20 specializes in web development, SEO, e-commerce development and digital strategy. iWeb works with various clients in different industries including retail, arts & entertainment and automotive services.

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    Clients

    British Heart Foundation - Award winning B2C2B Magento eCommerce website for the nation's heart charity.

    Industries

  • 93
    (6 Reviews) 4.8

    Timeliness

    4.7

    Service Excellence

    4.8

    Value

    4.7

    Would Recommend

    4.8
    $10,000+
    10 - 49 employees
    Slough, England

    Hexagon Digital Lab Private Limited is an ERP consulting and SI company. Established in 2019, the team provides ERP consulting and SI, custom software development, and mobile app development. Their small company is headquartered in Zinj, Bahrain; Noida, India and Slough, United Kingdom.

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    Industries

  • 94
    (4 Reviews) 4.9

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $1,000+
    2 - 9 employees
    London, England

    Fast Data Science is a consultancy founded in Thornton Heath, England in 2018 with no more than 10 employees. They are experts in big data consulting solutions for medium and enterprise-level firms in the fields of healthcare and IT services.

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    Clients

    Boehringer Ingelheim

    Industries

  • 95
    (14 Reviews) 4.7

    Timeliness

    4.7

    Service Excellence

    4.7

    Value

    4.7

    Would Recommend

    4.7
    $1,000+
    10 - 49 employees
    London, England
    TWC IT Solutions is an IT managed services company in London, England; Jersey City, New Jersey and Central, Hong Kong. The small team offers IT managed services, IT strategy consulting, cloud consulting & SI, unified communications consulting & SI, and more and was launched in 2011.
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    Industries

  • 96
    (11 Reviews) 4.7

    Timeliness

    4.3

    Service Excellence

    4.8

    Value

    4.2

    Would Recommend

    4.9
    $10,000+
    250 - 999 employees
    London, England

    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.

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    Clients

    The BBC

    Industries

  • 97
    (7 Reviews) 4.5

    Timeliness

    4.6

    Service Excellence

    4.3

    Value

    4.2

    Would Recommend

    4.2
    $50,000+
    50 - 249 employees
    London, England
    Launched in 2011, TenX is a IT strategy consulting company. They are located in Stamford, Connecticut; Islamabad, Pakistan; Toronto, Canada and Lahore, Pakistan and have a midsize team. Their services include IT strategy consulting, BI & big data consulting & SI, other IT consulting and SI, custom software development, and more.
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    Industries

  • 98
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    1,000 - 9,999 employees
    London, England
    Founded in 2022, EdgeNext Technology is a large Bellevue, Washington-based cloud consulting & SI company. Their services include cloud consulting & SI and unified communications consulting & SI.
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    Industries

  • 99
    (2 Reviews) 5.0

    Timeliness

    4.8

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $10,000+
    10 - 49 employees
    London, England

    House Of Progress is a growth marketing agency that provides digital strategy, conversion optimization, and market research services to their small business, enterprise, and mid-market clients in the consumer products and services, retail, and other industries. Based in Bucharest, their team is made up of 10 employees.

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    Clients

    KnightsbridgeFX

    Industries

  • 100
    (1 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    Undisclosed
    2 - 9 employees
    London, England
    Corporate training company CEYX was founded in 2019. Their small team is located in Leeds, United Kingdom and London, United Kingdom and focuses on corporate training, cloud consulting & SI, and IT strategy consulting.
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    Clients

    Deliveroo (RooFoods LTD)

    Industries

  • 101
    (0 Reviews)

    Not yet reviewed.

    $25,000+
    1,000 - 9,999 employees
    London, England
    Prolifics is an ECM consulting and SI company. Launched in 1978, the team focuses on ECM consulting and SI and unified communications consulting & SI.
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  • 102
    (3 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $5,000+
    10 - 49 employees
    London, England
    Buttercups is a custom software development company and web development firm. The Kyiv, Ukraine-based firm was established in 2019. The small team offers custom software development and web development.
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    Clients

    MobiWallet

    Industries

  • 103
    (1 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $25,000+
    10 - 49 employees
    London, England

    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.

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    Industries

  • 104
    (5 Reviews) 4.8

    Timeliness

    4.8

    Service Excellence

    4.8

    Value

    5.0

    Would Recommend

    5.0
    $25,000+
    50 - 249 employees
    London , England

    TMotions Global Ltd is a custom software development firm established in 2004. The midsize team specializes in custom software development, enterprise app modernization, application management & support, and cloud consulting & SI. The firm is located in London , United Kingdom and Sahibzada Ajit Singh Nagar, India.

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    Clients

    An Australian food retailer that has 700 stores across Australia and has an online b2B and B2C portal working seamlessly to manage cohesive inventory and order view.

    Industries

  • 105
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    250 - 999 employees
    London, England
    Credera (UK) is an IT strategy consulting company. The team offers IT strategy consulting and BI & big data consulting & SI and is located in London, England.
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    Industries

  • 106
    (2 Reviews) 4.3

    Timeliness

    4.5

    Service Excellence

    4.3

    Value

    4.5

    Would Recommend

    4.5
    $5,000+
    10 - 49 employees
    London, England

    Data Reply is a big data and analytics consulting firm headquartered in London. They were founded in 2015 and currently have over 10 employees. In addition to their advanced analytics capacities, the team provides business intelligence and data consulting, cloud consulting, software integration, and IT strategy for mostly enterprise-scale clients.

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    Clients

    Vitol

    Industries

  • 107
    (7 Reviews) 4.7

    Timeliness

    4.8

    Service Excellence

    4.8

    Value

    4.5

    Would Recommend

    5.0
    $10,000+
    10 - 49 employees
    London, England

    The Data Analysis Bureau is a data science and engineering innovation agency focusing in artificial intelligence and cloud consulting & SI. Founded in 2016, they're based in London. Their team of around 20 employees serves mostly midmarket and enterprise clients. 

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    Clients

    Trigger Racing

    Industries

  • 108
    (2 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    4.8

    Value

    5.0

    Would Recommend

    4.8
    Undisclosed
    2 - 9 employees
    London, England

    Jump Data is a small London, United Kingdom-based business intelligence company and other application development company. The team provides BI & big data consulting & SI and other application development.

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    Industries

  • 109
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    1,000 - 9,999 employees
    London, England
    Launched in 2006, Rite Software Solutions & Services LLP is a cloud consulting & SI company. Their services include cloud consulting & SI and ERP consulting and SI.
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  • 110
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    250 - 999 employees
    London, England
    Sharp Business Systems UK Plc is an IT managed services company. The East Ardsley, England-based agency was established in 1964. Their services include IT managed services and Cybersecurity.
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  • 111
    (4 Reviews) 5.0

    Timeliness

    4.9

    Service Excellence

    5.0

    Value

    4.9

    Would Recommend

    5.0
    $5,000+
    50 - 249 employees
    City of London, England

    Noxtton was founded in 2016 and is headquartered in Tbilisi, Ga. with another location in London. With 16 employees, they provide cybersecurity, web design, and mobile and app marketing for midmarket and small businesses.

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    Clients

    EBRD
  • 112
    (2 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $1,000+
    2 - 9 employees
    Kings Place, England
    UserLab, an other IT consulting and SI company, was established in 2016. Their small team is located in Kings Place, United Kingdom and NEWCASTLE UPON TYNE, United Kingdom. Their services include other IT consulting and SI and ux/ui design.
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    Industries

  • 113
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    1,000 - 9,999 employees
    Surrey , England
    Navisite is a cloud consulting & SI company headquartered in Andover, Massachusetts and Surrey , England. The team offers cloud consulting & SI and IT managed services.
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    Industries

  • 114
    (3 Reviews) 4.3

    Timeliness

    4.3

    Service Excellence

    4.0

    Value

    4.0

    Would Recommend

    4.7
    $5,000+
    10 - 49 employees
    London, England

    Technology consulting firm Priocept is based in London. Their team includes 11 employees. Priocept has been specializing in e-commerce development, IT consulting, and web development since it was founded in 2004. Most of their partnerships include enterprise and midmarket clients. 

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    Clients

    Argos

    Industries

  • 115
    (3 Reviews) 4.8

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    4.7

    Would Recommend

    5.0
    $1,000+
    50 - 249 employees
    London, England
    Madiff is an artificial intelligence company. Their midsize team is located in Warszawa, Poland; Braga, Portugal; Kraków, Poland and Los Angeles, California. The agency provides Artificial Intelligence, IT managed services, Custom Software Development, Blockchain, and more.
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    Clients

    AWP Polska SP. z o.o.

    Industries

  • 116
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    1,000 - 9,999 employees
    London, England
    Insight Global, a big data analytics company, provides BI & big data consulting & SI and cloud consulting & SI. The firm is located in Atlanta, Georgia and Birmingham, Alabama.
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    Industries

  • 117
    (5 Reviews) 4.6

    Timeliness

    4.6

    Service Excellence

    4.4

    Value

    4.7

    Would Recommend

    4.8
    $50,000+
    50 - 249 employees
    London, England

    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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    Clients

    Talent Intelligence

    Industries

  • 118
    (2 Reviews) 4.8

    Timeliness

    4.8

    Service Excellence

    4.5

    Value

    4.0

    Would Recommend

    5.0
    $10,000+
    10 - 49 employees
    London, England

    C-BIA Consulting Ltd is a big data company headquartered in London, United Kingdom. Founded in 2006, the small team specializes in BI & big data consulting & SI, IT managed services, custom software development, application management & support, and more.

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    Industries

  • 119
    (1 Reviews) 4.5

    Timeliness

    4.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    5.0
    $5,000+
    10 - 49 employees
    Borehamwood, England
    Smile IT Solutions, a cloud consulting & SI company, was established in 2015. The small Borehamwood, England-based team offers cloud consulting & SI, Artificial Intelligence, AI Agents, Generative AI, and more.
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    Clients

    Hertford Town Football Club Biadin United Kingdom Uncovered Teb Soft

    Industries

  • 120
    (6 Reviews) 5.0

    Timeliness

    5.0

    Service Excellence

    5.0

    Value

    5.0

    Would Recommend

    4.9
    $1,000+
    10 - 49 employees
    London, England
    Tbops is a software development firm. Established in 2019, the small firm is headquartered in London, United Kingdom. Their team specializes in custom software development, web development, and e-commerce development.
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    Industries

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