Top 100 Cybersecurity Companies in London

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Top 100 Cybersecurity Companies in London

The Best of February 2026

Looking for a top cybersecurity consultant in London?

Check out our list of the best cybersecurity consulting companies to choose a partner that can secure your company. Preventing data breaches should be the top security priority for all businesses in the digital age. 

List of the Best London Cybersecurity Consultants

  • 361
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    2 - 9 employees
    Letchworth, England
    IT managed services company Edge IT was founded in 2012. The team provides IT managed services and Cybersecurity and is located in Letchworth, England.
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  • 362
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    10 - 49 employees
    Kings Hill, England
    IT Backbone Limited, an IT managed services company, specialize in IT managed services and Cybersecurity. They were launched in 2008.
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  • 363
    (0 Reviews)

    Not yet reviewed.

    $10,000+
    10 - 49 employees
    Dunstable, England
    TechAll Solutions is an IT strategy consulting company. Headquartered in Dunstable, England, the company was established in 2024. Their services include IT strategy consulting and IT managed services.
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  • 364
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    50 - 249 employees
    Woodley, England
    Capito Ltd is a midsize Livingston , Scotland-based IT strategy consulting company. The team provides IT strategy consulting and cloud consulting & SI.
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    Industries

  • 365
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    50 - 249 employees
    Aylesbury, England
    Red Helix is a Cybersecurity company. The firm is in Aylesbury, England. Their services include Cybersecurity and IT managed services.
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    Industries

  • 366
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    10 - 49 employees
    Camberley, England
    Projectfive is an IT managed services company. Founded in 2002, the team focuses on IT managed services and Cybersecurity. The firm is based in Camberley, England.
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    Industries

  • 367
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    Freelancer employees
    London, England
    Nandini Consulting, a Market Research company, is located in London, England. They specialize in Market Research and IT strategy consulting.
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    Industries

  • 368
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    10 - 49 employees
    Uckfield, England
    Founded in 2003, PS Tech, a small IT managed services company, is located in Uckfield, England. Their team focuses on IT managed services and Cybersecurity.
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  • 369
    (0 Reviews)

    Not yet reviewed.

    $10,000+
    250 - 999 employees
    Reading , England
    Launched in 2003, Herjavec Group is an IT managed services company. The team provides IT managed services and Cybersecurity.
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    Industries

  • 370
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    50 - 249 employees
    Theale, England
    Clearswift is a Cybersecurity company. Their midsize team is based in Theale, England and provides Cybersecurity. The agency was founded in 1982.
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  • 371
    (0 Reviews)

    Not yet reviewed.

    $10,000+
    1,000 - 9,999 employees
    Theale, England
    Rapid7 is a Cybersecurity company. Their large team is in Boston, Massachusetts and Manhattan Beach, California. Their services include Cybersecurity and IT managed services.
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    Industries

  • 372
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    2 - 9 employees
    Reading, England
    In Reading, England and Reading, England, Dead Simple Computing is an IT strategy consulting company. They offer IT strategy consulting and cloud consulting & SI.
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    Industries

  • 373
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    10 - 49 employees
    Basingstoke, England
    Cybersecurity company Censornet was founded in 2005. Based in Basingstoke, England and Brøndby, Denmark, the team focuses on Cybersecurity.
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  • 374
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    50 - 249 employees
    Milton Keynes, England
    Bluecube Technology Solutions is a Milton Keynes, England-based IT managed services company. They offer IT managed services and Cybersecurity.
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  • 375
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    10 - 49 employees
    Brighton, England
    Ingenio Technologies is an IT managed services company. The Brighton, England-based agency specializes in IT managed services and IT strategy consulting.
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  • 376
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    2 - 9 employees
    Oldbrook, England
    GEOPC Ltd is an Oldbrook, England-based Cybersecurity company. Founded in 2023, the team provides Cybersecurity.
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    Industries

  • 377
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    10 - 49 employees
    Basingstoke, England
    Infosec Cloud, an IT managed services company, provide IT managed services and cloud consulting & SI. They were founded in 2012.
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    Industries

  • 378
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    10 - 49 employees
    Guildford , England
    Small IT managed services company Pro Drive IT Limited, is in Guildford , England. The team provides IT managed services and IT strategy consulting.
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    Industries

  • 379
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    10 - 49 employees
    Brighton, England
    New World Tech is a cloud consulting & SI company. Based in Brighton, England, the firm provides cloud consulting & SI and Cybersecurity.
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  • 380
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    10 - 49 employees
    Brighton, England
    Hyve Managed Hosting is an IT managed services company. They specialize in IT managed services and cloud consulting & SI and were established in 2001. The firm is located in Brighton, England.
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    Industries

  • 381
    (0 Reviews)

    Not yet reviewed.

    $25,000+
    50 - 249 employees
    Thatcham, England
    Support Revolution is an IT strategy consulting company. Their midsize team of employees is in Thatcham, England. Their team offers IT strategy consulting and ERP consulting and SI.
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  • 382
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    10 - 49 employees
    RG1 1LX, England
    Shift Left Group is an IT strategy consulting company. Launched in 2015, the team provides IT strategy consulting and cloud consulting & SI.
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    Industries

  • 383
    (0 Reviews)

    Not yet reviewed.

    $1,000+
    2 - 9 employees
    Bedford, England
    IT strategy consulting company PublicTec was established in 2021. The company provides IT strategy consulting and cloud consulting & SI, and is small.
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  • 384
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    250 - 999 employees
    Oxford, England
    Nominet is an Oxford, England-based Cybersecurity company. Launched in 1996, the team specializes in Cybersecurity.
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  • 385
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    10 - 49 employees
    Oxford, England
    Founded in 1996, Wiseserve Ltd. Is a Cybersecurity company. Their team provides Cybersecurity and IT managed services.
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  • 386
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    250 - 999 employees
    Shoreham-by-Sea, England
    Focus Group , a cloud consulting & SI company, provide cloud consulting & SI and unified communications consulting & SI. They were founded in 2003.
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    Industries

  • 387
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    Freelancer employees
    Brighton and Hove, England
    Small Cybersecurity company PC HELP MAN, is based in Brighton and Hove, England. The team focuses on Cybersecurity and other IT consulting and SI.
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  • 388
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    10 - 49 employees
    Linton, England
    Cybersecurity company Mannassi IT Solutions was launched in 1996. The firm provides Cybersecurity and IT managed services, and is small.
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    Industries

  • 389
    (0 Reviews)

    Not yet reviewed.

    Undisclosed
    10 - 49 employees
    Worthing, England
    Counterpoint is an IT managed services company headquartered in Worthing, England. Their services include IT managed services and IT strategy consulting.
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  • 390
    (0 Reviews)

    Not yet reviewed.

    $5,000+
    10 - 49 employees
    Kempston, England
    Total IT Technology Solutions Ltd is an IT managed services company founded in 2006. The small team focuses on IT managed services and unified communications consulting & SI.
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