Top 100 Cybersecurity Companies in London

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Top 100 Cybersecurity Companies in London

May 2022

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

  • 1
    • $5,000+
    • 50 - 249 employees
    • London, United Kingdom

    Transputec, a midsize cybersecurity company, is located in Wembley, United Kingdom. They focus on cybersecurity, IT managed services, and custom software development and were launched in 1984.

    Industries

    Notable Project

    Transputec Ltd provides cybersecurity services for a real estate company. They have defined the client's IT infrastructure's compliance issues and are working on improvements and continuous maintenance.

    "Their 100% availability in finding the right resource to engage, with a "can-do" approach is impressive."

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  • 2
    • Scheduling

      4.8
    • Quality

      4.8
    • Cost

      4.5
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • Undisclosed
    • 10 - 49 employees
    • London, United Kingdom

    HewardMills is a Data Protection Office (DPO) services company based in London with offices in Dublin, San Francisco, Berlin, and Zurich. The company has a team of more than 30 that provides business consulting, cybersecurity, and corporate training services to various companies.

    Clients

    • Monzo
    • Symantec
    • iManage
    • HCL

    Notable Project

    A marketing technology company hired HewardMills to help them comply with European data privacy law by providing Data Protection Office (DPO) services. HewardMills also provided consultancy regarding data privacy policies and European data privacy law and helped put solutions that would help the company comply. The engagement has enabled the company to move forward after having fulfilled their legal requirements.

    "HewardMills is very responsive; if I hand them something on Monday, I almost always get a response about it in our Wednesday meeting." - Global Data Privacy Manager, Marketing Technology Company 

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  • 3
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      4.5
    • NPS

      5.0
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    • $1,000+
    • 10 - 49 employees
    • London, United Kingdom

    Smartdesc is a London-based IT company with a team of fewer than 50 people. Founded in 2011, they offer IT strategy consulting, cloud consulting, and cybersecurity solutions for small and mid-market businesses, primarily non-profit organizations.

    Clients

    • Mind
    • Terrence Higgins Trust
    • NCVO
    • ACEVO

    Industries

    Notable Project

    Smartdesc provided various IT services and cloud migration for a non-profit organization. The organization needed to transition their work online to the cloud. The project enabled the organization to work 100% remotely.

    “Anytime we came across a slight barrier, it was never an issue to Smartdesc — they always managed to find a solution or a workaround.”  - Head of Finance and Operations, Non-Profit Organization
     

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  • 4
    • Scheduling

      5.0
    • Quality

      4.5
    • Cost

      4.5
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • Undisclosed
    • 1,000 - 9,999 employees
    • London, United Kingdom

    BSI Group is an IT firm headquartered in London. Their midsized team specializes in cybersecurity, IT strategy consulting, and business consulting. 

    Clients

    • MED49

    Notable Project

    BSI Group audited a healthcare provider software company to see if they were ISO 13485 compliant. The audit was completed in two phases. 

    "They were very straightforward. It was very clear what was being done and what their expectations of us were." – Director of Operations, Healthcare Provider Software Company

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  • 5
    • $1,000+
    • 10 - 49 employees
    • London, United Kingdom

    Cloudserve is a cloud solutions provider based in Bournemouth, England with an office in London. Founded in 2009, their team of fewer than 50 professionals offers IT managed services, IT strategy consulting, and cloud consulting & SI services for small and medium-sized businesses. They have experience working in various industries, including hospitality, financial services, and IT.

    Clients

    • FJB Hotels
    • BSN Social Care
    • Futur First
    • Braben

    Industries

    Notable Project

    Cloudserve Ltd migrated local servers to a central cloud environment. They integrated Office 365, SharePoint, file-sharing, and implementing abilities into the IT system. They provide ongoing support services.

    "Cloudserve Ltd has delivered exceptional ongoing support."

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  • 6
    • $5,000+
    • 10 - 49 employees
    • Tower Bridge Rd, United Kingdom

    Clear Thinking Solutions is a communication and IT solutions provider based in Essex, U.K., with an office in London. The company, founded in 2009, has a team of more than 20 that provides IT managed services, cybersecurity, and IT strategy consulting to small and midmarket companies.

    Industries

    Notable Project

    Clear Thinking Solutions has provided IT services and support to an events and networking company. These services include cybersecurity services, software licensing, compliance requirements, bespoke IT consulting, and miscellaneous on-call IT support services. Clear Thinking Solutions has provided service that meets all expectations in this ongoing engagement, allowing the company to run more efficiently.

    "Keeping our systems running 24/7, keeping us safe from cyber-crime, and managing our licensing is a huge burden lifted from me." - Owner and Director, Events and Networking Company

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  • 7
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 10 - 49 employees
    • London, United Kingdom

    Texaport Ltd is a tech support company based in Edinburgh, England, with a team of fewer than 10 members. Founded in 2012, the company provides cybersecurity, IT managed services, and IT strategy consulting services to mid-market firms as well as small and large companies. They have worked in various industries, such as IT, business services, and telecommunications.

    Industries

    Notable Project

    A media agency subcontracted Texaport Ltd to help with support for their IT system. Whether remotely or in the office, Texaport Ltd provides support for the company to make sure any problems with the Internet or server get fixed quickly. Texaport Ltd also worked on the server's backend for safe and secure data.

    "They always deal with issues in a timely manner. We never have to wait overly long for problems to be resolved. They work hard to ensure that we’re able to work with few IT issues. Texaport Ltd often flags and resolves issues before we even notice there’s a problem." - Account Manager, Media Agency

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  • 8
    • Scheduling

      4.9
    • Quality

      4.9
    • Cost

      4.9
    • NPS

      5.0
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    • $1,000+
    • 50 - 249 employees
    • London, United Kingdom

    Pro4ia is an IT managed services company launched in 2001. Headquartered in New York, New York and London, United Kingdom, their midsize team provides IT managed services, cloud consulting & SI, IT staff augmentation, IT strategy consulting, and more.

    Industries

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  • 9
    • Scheduling

      5.0
    • Quality

      4.9
    • Cost

      4.9
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 10 - 49 employees
    • London, United Kingdom

    Tibus Ltd is an internet company based in Belfast, Ireland that was founded in 1996. Their team of around 30 employees provides managed IT services to mid-market and small businesses in the IT sector. 

    Industries

    Notable Project

    Partnering with a nonprofit organization, Tibus Ltd provides ongoing hosting of a WordPress website. They also provide updates to the site and address any security concerns. The client is pleased with Tibus Ltd's deep engagement. 

    "They are knowledgeable and very responsive to queries. Our agreement establishes good processes for incident management and reporting. These standards prevent issues from arising." – IT Operations Manager, Nonprofit Organization

     

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  • 10
    • Scheduling

      5.0
    • Quality

      4.8
    • Cost

      4.8
    • NPS

      4.8
    Read Full Reviews on Clutch Visit Site
    • $10,000+
    • 50 - 249 employees
    • LONDON, United Kingdom

    ICterra is a midsize software development firm. Located in ANKARA, Turkey; München, Germany; LONDON, United Kingdom and ISTANBUL, Turkey, the company was founded in 1991. Their services include custom software development, application management & support, Artificial Intelligence, IoT development, and more.

    Industries

    Notable Project

    ICterra provides ongoing application management and support for a telecommunications company. The team handles the design, implementation, and maintenance of the client's license management system components.

    "We had no problems in communication, coordination, and regular updates with any team members during the project."

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  • 11
    • Scheduling

      5.0
    • Quality

      4.5
    • Cost

      5.0
    • NPS

      5.0
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    • $1,000+
    • 10 - 49 employees
    • London, United Kingdom

    Teceze Ltd is a London-based IT company founded in 2012 with more than 10 employees. They are experts in IT strategy consulting, cybersecurity, and IT managed services for clients that work in the industries of business services, consumer products, and more.

    Clients

    • Outsell, Inc.

    Industries

    Notable Project

    Teceze Ltd provides IT managed services for a research advisory firm. The firm was in need of a new IT support company to handle their IT needs. The firm has partnered with Teceze Ltd ever since.

    “They’re available 24/7 and responsive, usually within 10 minutes. They have a ticketing system installed on each machine for issue reporting.” - VP of IT Operations, Research Advisory Firm

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  • 12
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $1,000+
    • 10 - 49 employees
    • London, United Kingdom

    Cloud consulting & SI company Corewide was established in 2015. Their small team is in London, United Kingdom. Their services include cloud consulting & SI, other IT consulting and SI, IT managed services, and cybersecurity.

    Notable Project

    Corewide provided a qualified UI developer, Python developer, and a team of DevOps experts to help a software company containerize their product to make it available as a SaaS in AWS and Microsft Azure.

    "We were very impressed by their experience and knowledge level."

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  • 13
    • Scheduling

      5.0
    • Quality

      5.0
    • Cost

      5.0
    • NPS

      5.0
    Read Full Reviews on Clutch Visit Site
    • $5,000+
    • 50 - 249 employees
    • London, United Kingdom

    RiskIQ is a cybersecurity company based in San Francisco with a team of just over 150 employees. Established in 2009, they provide cybersecurity, business intelligence, big data consulting, and software integration services to clients in a variety of industries.

    Clients

    • Amazon
    • Disney
    • Bank of America
    • Box

    Industries

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  • 14
    • $5,000+
    • 250 - 999 employees
    • London, United Kingdom

    Founded in 2007, Lookout is a cybersecurity company. The firm focuses on cybersecurity and has a midsize team.

    Industries

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  • 15
    • $5,000+
    • 50 - 249 employees
    • London, United Kingdom

    Founded in 1998, IOActive is a cybersecurity company. Their midsize team is headquartered in Seattle, Washington; London, United Kingdom; Madrid, Spain and , United Arab Emirates and offers cybersecurity.

    Industries

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  • 16
    • $10,000+
    • 250 - 999 employees
    • Slough, United Kingdom

    Guidance Software is a software development firm that has been in operation since 1997. They are headquartered in Pasadena, Calif. and they have additional offices in Slough, U.K., Courbevoie, France, Waukesha, Wis., Rosemont, Ill., Dulles, Va., and New York. They have over 800 employees and they specialize in cybersecurity, IT strategy consulting, and IT staff augmentation. Their clients generally work in consumer services, government, or healthcare.

    Clients

    • Box
    • Cisco
    • Dropbox
    • IBM

    Industries

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  • 17
    • $10,000+
    • 250 - 999 employees
    • London, United Kingdom

    Cybereason is a cybersecurity company launched in 2012. Their midsize team is in Boston, Massachusetts; London, United Kingdom and Tel-Aviv, Israel. The agency specializes in cybersecurity, BI & big data consulting & SI, and IT strategy consulting.

    Industries

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  • 18
    • $10,000+
    • 250 - 999 employees
    • London, United Kingdom

    Digital Guardian, an IT managed services company, was launched in 2003. Based in Waltham, Massachusetts; Reston, Virginia; Santa Clara, California and Lehi, Utah, their midsize team focuses on IT managed services, cybersecurity, and IT strategy consulting.

    Industries

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  • 19
    • $10,000+
    • 250 - 999 employees
    • London, United Kingdom

    Veracode is a cybersecurity company based in Burlington, Massachusetts; London, United Kingdom and Boston, . The firm provides cybersecurity, application testing, and IT strategy consulting and has a midsize team.The firm was founded in 2006.

    Industries

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  • 20
    • $5,000+
    • 50 - 249 employees
    • London, United Kingdom

    Digital Shadows, a cybersecurity company, is headquartered in London, United Kingdom and Dallas, Texas. Established in 2011, the midsize team offers cybersecurity.

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  • 21
    • Undisclosed
    • 250 - 999 employees
    • London, United Kingdom

    ERP consulting and SI company Professional Advantage is in North Sydney, Australia. The midsize team offers ERP consulting and SI, cloud consulting & SI, BI & big data consulting & SI, cybersecurity, and more and was established in 1989.

    Industries

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  • 22
    • Undisclosed
    • 50 - 249 employees
    • London, United Kingdom

    In London, United Kingdom, Ravelin Technology is an AI firm and cybersecurity company. The midsize firm was established in 2014. Their team specializes in Artificial Intelligence and cybersecurity.

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  • 23
    • $10,000+
    • 10 - 49 employees
    • London, United Kingdom

    Turgensec, a cybersecurity company, is located in London , United Kingdom. They offer cybersecurity and were founded in 2019.

    Industries

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  • 24
    • $5,000+
    • 1,000 - 9,999 employees
    • London, United Kingdom

    Digitpol, an IT managed services company, was established in 2013. The firm offers IT managed services, cybersecurity, accounting, e-commerce development, and more and has a large team. The firm is based in Apeldoorn, Netherlands; Hong Kong, Hong Kong and London, United Kingdom.

    Industries

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  • 25
    • $10,000+
    • 2 - 9 employees
    • London, United Kingdom

    Vuntie Limited, a cybersecurity company, was founded in 2019. Based in London, United Kingdom, their small team focuses on cybersecurity, custom software development, BI & big data consulting & SI, IoT development, and more.

    Industries

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  • 26
    • Undisclosed
    • 2 - 9 employees
    • London, United Kingdom

    Nicolson Bray Ltd is a cybersecurity company. Located in London, United Kingdom, their small team provides cybersecurity. The company was founded in 2012.

    Industries

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  • 27
    • $1,000+
    • 1,000 - 9,999 employees
    • London, United Kingdom

    Emagine Consulting is a big data analytics company. Founded in 1994, the large company is in London, United Kingdom; Nanterre, France and Berlin, Germany. Their team focuses on BI & big data consulting & SI, cybersecurity, and mobile app development.

    Industries

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  • 28
    • $25,000+
    • 10 - 49 employees
    • London, United Kingdom
    HEXENS is a London, United Kingdom-based cybersecurity company. The small company was established in 2021. Their team focuses on cybersecurity.

    Industries

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  • 29
    • $1,000+
    • 50 - 249 employees
    • London, United Kingdom

    Clear Infosec is a Jersey City, New Jersey-based cybersecurity company. They specialize in cybersecurity, IT staff augmentation, and IT strategy consulting and were established in 2017.

    Industries

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  • 30
    • Undisclosed
    • 10 - 49 employees
    • London, United Kingdom

    Small cybersecurity and business consulting company Acumin Consulting, is in London, . Established in 1998, the team specializes in cybersecurity and business consulting.

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Need help selecting a company?

Based on your budget, timeline, and specifications we can help you build a shortlist of companies that perfectly matches your project needs. Schedule a free consultation with a Manifest Analyst.

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