Top 100 Cybersecurity Companies in London

The Best of April 2024

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.

Jump to Most Reviewed Companies

List of the Best London Cybersecurity Consultants

Featured providers
- Dataprise
  (14 Reviews) 4.7
  - Timeliness
    4.7
  - Service Excellence
    4.7
  - Value
    4.6
  - Would Recommend
    4.7
  - Undisclosed
  - 250 - 999 employees
  - Rockville, MD
  Dataprise is a Rockville, Maryland-based IT managed services company. The firm provides IT managed services, cybersecurity, IT strategy consulting, and web development and is midsize.The firm was launched in 1995.
  
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- TPx Communications
  (70 Reviews) 4.3
  - Timeliness
    4.1
  - Service Excellence
    4.3
  - Value
    4.2
  - Would Recommend
    4.3
  - $1,000+
  - 1,000 - 9,999 employees
  - Austin, TX
  TPx Communications is an IT services company headquartered in Waltham, Mass. with additional offices in Irvine and Orange County, Calif., Boston, and San Francisco. It was founded in 2000 and now has a team 780 that provides IT managed services, productivity, collaboration & UC consulting & SI, cybersecurity and more to mostly midmarket companies.
  
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1

Transputec Ltd
(15 Reviews) 4.6
- Timeliness
  4.6
- Service Excellence
  4.6
- Value
  4.3
- Would Recommend
  4.7
- $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.

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2

ELEKS
(29 Reviews) 4.8
- Timeliness
  4.7
- Service Excellence
  4.8
- Value
  4.6
- Would Recommend
  4.9
- $50,000+
- 1,000 - 9,999 employees
- London, United Kingdom
Founded in 1991, ELEKS is a provider of software development, product design and technology advisory services. They offer cooperation models that fit the goals, resources and timelines of Fortune 500 companies, large enterprises, and small businesses. ELEKS has more than 2,000 specialists and 17 offices on three continents to serve their clients globally.

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Clients
- Eagle Investment Systems (a subsidiary of BNY Mellon)
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3

Link Group Global, inc.
(5 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  4.9
- Would Recommend
  5.0
- $10,000+
- 250 - 999 employees
- London, United Kingdom
Link Group Global, inc. Is an Austin, Texas-based human resources agency. The midsize company was established in 2015. Their services include HR services, IT managed services, and IT staff augmentation.

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Clients
- Danone
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4

Texaport
(12 Reviews) 4.9
- Timeliness
  4.8
- Service Excellence
  4.9
- Value
  4.8
- Would Recommend
  4.9
- $5,000+
- 10 - 49 employees
- London, United Kingdom
Texaport is an established and reputable managed service provider with a strong focus on security and customer service excellence. Texaport empowers organizations with comprehensive managed services that combine exceptional customer service, strategic digital transformation, and robust security solutions.

Founded in 2012, Texaport has been providing IT solutions, Consultancy, and Cybersecurity to clients throughout the UK and across the globe.

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5

ERRNA
(2 Reviews) 4.8
- Timeliness
  5.0
- Service Excellence
  4.8
- Value
  5.0
- Would Recommend
  5.0
- $5,000+
- 1,000 - 9,999 employees
- London, United Kingdom
ERRNA is a blockchain company founded in 2015. The small San Jose, California-based team provides blockchain, cybersecurity, marketing strategy, mobile app development, and more.

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6

a1qa
(16 Reviews) 4.9
- Timeliness
  4.8
- Service Excellence
  4.9
- Value
  4.7
- Would Recommend
  5.0
- $10,000+
- 250 - 999 employees
- London, United Kingdom
A1QA logo is a quality assurance and software testing company founded in 2002. Based in Denver, they have a team of 200+ employees that specialize in application testing and cybersecurity. They primarily serve midmarket clients in the IT and telecommunications industries.

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Clients
- Adidas
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7

HewardMills
(2 Reviews) 5.0
- Timeliness
  4.8
- Service Excellence
  5.0
- Value
  4.5
- Would Recommend
  5.0
- 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.

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Clients
- Monzo
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8

Smartdesc
(1 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  4.5
- Would Recommend
  5.0
- $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.

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Clients
- Mind
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9

Quema
(10 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $1,000+
- 10 - 49 employees
- London, United Kingdom
Quema OÜ is a small IT strategy consulting and cloud consulting & SI company. The Tallinn, Estonia-based company was founded in 2022. Their team offers IT strategy consulting and cloud consulting & SI.

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Clients
- Blyp
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10

esynergy
(3 Reviews) 4.8
- Timeliness
  4.2
- Service Excellence
  4.8
- Value
  4.5
- Would Recommend
  4.7
- $25,000+
- 50 - 249 employees
- London, United Kingdom
Esynergy is a big data analytics company. They are headquartered in London, United Kingdom and have a midsize team. Their services include BI & big data consulting & SI, cloud consulting & SI, custom software development, mobile app development, and more.

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11

Systemagic Ltd
(4 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $1,000+
- 10 - 49 employees
- London, United Kingdom
Established in 1999, Systemagic Ltd is an IT managed services company. The firm offers IT managed services, cloud consulting & SI, cybersecurity, and IT strategy consulting and has a small team. The firm is located in Bradford on Avon, United Kingdom and London, United Kingdom.

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12

IT Labs
(5 Reviews) 4.5
- Timeliness
  4.5
- Service Excellence
  4.5
- Value
  4.3
- Would Recommend
  4.4
- $25,000+
- 250 - 999 employees
- London, United Kingdom
IT Labs, a IT strategy consulting company, is in Palm Beach Gardens, Florida; London, United Kingdom; Noordwijk, Netherlands and Skopje, North Macedonia. Founded in 2005, the midsize team focuses on IT strategy consulting, cloud consulting & SI, custom software development, and blockchain.
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13

Clear Thinking IT Solutions
(7 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  4.9
- Would Recommend
  5.0
- $5,000+
- 10 - 49 employees
- Billericay, 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.

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14

BreachLock Inc
(1 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- Undisclosed
- 50 - 249 employees
- London, United Kingdom
Founded in 2019, BreachLock Inc is a cybersecurity company. They are in New York, New York and have a midsize team. Their services include cybersecurity, IoT development, application testing, compliance consulting, and more.

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15

BSI Group
(1 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  4.5
- Would Recommend
  5.0
- 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.

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Clients
- MED49
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16

HEXENS
(1 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $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.
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17

Cloudserve Ltd
(4 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $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.

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Clients
- FJB Hotels
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18

Sagiton
(17 Reviews) 4.8
- Timeliness
  4.6
- Service Excellence
  4.8
- Value
  4.6
- Would Recommend
  4.8
- Undisclosed
- 50 - 249 employees
- London, United Kingdom
Sagiton is a business-oriented software house located in Wroclaw, Poland. The company was founded in 2010 and now employs a team of 48 people. Sagiton provides custom software development, cybersecurity, mobile app development, IT strategy consulting, marketing strategy, and web design services. Most of their clients are small businesses.

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Clients
- TapWinWin
Industries
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19

TIBUS
(4 Reviews) 4.9
- Timeliness
  5.0
- Service Excellence
  4.9
- Value
  4.9
- Would Recommend
  5.0
- $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.

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20

TWC IT Solutions
(11 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $1,000+
- 10 - 49 employees
- Potters Bar, United Kingdom
IT managed services company TWC IT Solutions was established in 2011. They are located in Potters Bar, United Kingdom; Jersey City, New Jersey and Central, Hong Kong and have a small team. Their services include IT managed services, IT strategy consulting, cloud consulting & SI, unified communications consulting & SI, and more.

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21

CovertSwarm

(0 Reviews)

Not yet reviewed.
- $5,000+
- 10 - 49 employees
- London, United Kingdom
Founded in 2020, CovertSwarm is a cybersecurity company. The company focuses on cybersecurity and has a small team.
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22

Opstergo
(4 Reviews) 5.0
- Timeliness
  5.0
- Service Excellence
  5.0
- Value
  5.0
- Would Recommend
  5.0
- $50,000+
- 10 - 49 employees
- London, United Kingdom
Founded 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.
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23

Teceze Ltd
(1 Reviews) 4.5
- Timeliness
  5.0
- Service Excellence
  4.5
- Value
  5.0
- Would Recommend
  5.0
- $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.

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Clients
- Outsell, Inc.
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24

ValueLabs
(3 Reviews) 4.3
- Timeliness
  4.3
- Service Excellence
  4.3
- Value
  4.3
- Would Recommend
  4.3
- Undisclosed
- 1,000 - 9,999 employees
- London, United Kingdom
ValueLabs is a global business technology services and solutions provider based in Hyderabad, India with over 25 offices worldwide in the US, Europe, and Asia. Founded in 1997, ValueLabs' team of over 5,000 employees provides non-voice BPO/back office services and voice/call center capabilities.

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25

WQsoftwares

(0 Reviews)

Not yet reviewed.
- $1,000+
- 50 - 249 employees
- London, United Kingdom
Based in Peshawar, Pakistan and London, United Kingdom, WQsoftwares is a marketing strategy company. The midsize company was founded in 2014. Their team specializes in marketing strategy, cloud consulting & SI, cybersecurity, and custom software development.
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26

Ministry

(0 Reviews)

Not yet reviewed.
- $10,000+
- 2 - 9 employees
- London, United Kingdom
Ministry Design is a branding agency. Their small team is located in London, United Kingdom. Their team offers branding, voice services, digital strategy, search engine optimization, and more.
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Clients
- Oxfam
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27

Cyber Legion

(0 Reviews)

Not yet reviewed.
- Undisclosed
- 2 - 9 employees
- London, United Kingdom
Cyber Legion is a cybersecurity company located in London, United Kingdom. They offer cybersecurity, application testing, and other IT consulting and SI and were founded in 2021.

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28

Littlefish Managed IT Services
(1 Reviews) 4.0
- Timeliness
  4.0
- Service Excellence
  4.0
- Value
  5.0
- Would Recommend
  4.0
- Undisclosed
- 250 - 999 employees
- London, United Kingdom
Littlefish Managed IT Services is an IT managed services company. Their midsize team is located in Nottingham, United Kingdom; Sheffield, United Kingdom and London, United Kingdom. The firm specializes in IT managed services, cybersecurity, cloud consulting & SI, and IT strategy consulting. The firm was established in 2003.
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29

Clear Infosec

(0 Reviews)

Not yet reviewed.
- $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.
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30

DynaRisk

(0 Reviews)

Not yet reviewed.
- $1,000+
- 10 - 49 employees
- London, United Kingdom
DynaRisk, a cybersecurity company, is in London, United Kingdom. The small firm was launched in 2016. Their team focuses on cybersecurity.
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Clients
- Hiscox
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