Top 100 Penetration Testing Companies in the United Kingdom
December 2023Looking for a top penetration testing company in the United Kingdom?
Having vulnerable security poses a threat to your organization. In an age where data has become some of the most important assets that your company will have, improving security measures is always a must. Penetration testing aims to solve this problem by simulating real-life security breaches without the risk of an actual cyberattack. Also known as ethical hacking, this process helps identify weak spots within your IT network infrastructure by applying methods that real attackers would use.
A penetration testing company can assist you in determining your security vulnerabilities. Doing so will provide you with the information that you need to fortify your cybersecurity. Hiring the right penetration testing company can give you a significant advantage in safekeeping your virtual assets.
To assist you in your search for a partner, we’ve compiled this list of the top penetration testing services in United Kingdom. Browse descriptions, feedback, and awards to find which can best suit your company’s needs.
List of the Best United Kingdom Penetration Testing Services
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1
- $50,000+
- 50 - 249 employees
- London, United Kingdom
Mad Devs is a digital development company based in Cambridge, England, and founded in 2016. Their team of 35 employees specializes in custom software development, web development, and cloud consulting. They mainly work with small businesses and midmarket clients in the consumer products, education, and business services industries.
Clients
- Clutch
- Internews
- Veeqo
- Roci.fi
Industries
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A decentralized credit economy company hired Mad Devs to support the enhancement of their software. They conducted integration tests, fixed bugs, implemented CI elements, and performed various tech tasks.
"One impressive thing I would like to point out was their gentle approach to the changes they brought to our team."
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2
- $5,000+
- 10 - 49 employees
- Edinburgh, 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.
Industries
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Texaport Ltd provides comprehensive IT services including 24-hour support, GDPR consulting, and troubleshooting.
"Their communication is top notch, and they respond to us quickly."
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3
- $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
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Transputec Ltd was hired to develop and upgrade new store servers for a craft retailer. They were also tasked with migrating databases and supporting the client with the installation of the servers in stores.
"The process was fairly smooth, and updates were prompt."
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4
- $5,000+
- 10 - 49 employees
- Clayton-le-Woods, United Kingdom
Launched in 2001, HW Technology is an IT managed services company. The agency specializes in IT managed services, cybersecurity, IT strategy consulting, and other IT consulting and SI and has a small team.
Industries
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Orca provides managed IT services to an accounting firm. They’ve spent three months transferring the client’s IT processes to their system after an on-site visit; they’ve purchased and installed software.
“Their total and utter professionalism set them apart from their competitors.”
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5
- $1,000+
- 10 - 49 employees
- Colden Common, United Kingdom
Evalian is a small cybersecurity and business consulting company. Based in Colden Common, United Kingdom; London, United Kingdom and Worcester, United Kingdom, the firm was founded in 2017. Their team specializes in cybersecurity and business consulting.
Clients
- Alliants
- T.M Lewin
- Copy Bet
- Vistry Group
Industries
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Evalian held a standard Cyber Essentials Plus assessment for a software company. They run scans and offer an opportunity for remediation before they could be rescanned.
"They took the time to make it stress-free while maintaining the impartiality you'd expect as an assessor."
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6
- $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
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Smartdesc helped a nonprofit membership organization transition from an outdated technology environment to Office 365 in order to facilitate remote work. They remain on board to provide ongoing support.
"The most noteworthy thing about working with them is their ability to fix problems."
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7
- $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.
Industries
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To improve the events and networking company's IT division, Clear Thinking IT Solutions was brought in to optimize its cyber security measures and maintain compliance requirements.
"They have built us a robust IT infrastructure that is reliable."
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8
- $1,000+
- 10 - 49 employees
- Bournemouth, 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
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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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9
- $5,000+
- 50 - 249 employees
- London, United Kingdom
Suntel Analytics, LLC is a West Palm Beach, Florida-based AI development company. Launched in 2022, the small team focuses on Artificial Intelligence, business consulting, corporate training, ai consulting, and more.
Industries
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Suntel Analytics provided cybersecurity services for a financial services company. The team was tasked with data security, performance analysis, network fortification, employee training, and 24/7 monitoring.
"Suntel Analytics provided robust cybersecurity services to our finance team."
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10
- $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
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Teceze supplies IT and tech support for a research advisory firm. They manage the firm’s hardware, office machines, security, and internal applications. They also troubleshoot issues as needed.
"Teceze is proactive in terms of reaching out to end users and fixing issues."
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11
- 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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12
- $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.
Industries
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TWC IT Solutions provides ethernet, telephony, and mobile support for a meat and poultry supplier. They implement a cloud-based telephony system, allowing for an efficient route to inbound order support.
"We are impressed with the high level of expertise of every team member."
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13
- Undisclosed
- 250 - 999 employees
- Birmingham, United Kingdom
IT strategy consulting company Air IT was established in 2005. Their midsize team is located in Sandiacre, United Kingdom. Their services include IT strategy consulting, cloud consulting & SI, cybersecurity, and IT managed services.
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14
- $1,000+
- 10 - 49 employees
- Hildenborough, United Kingdom
RSK Cyber Security is a cybersecurity company. They are headquartered in Hildenborough, United Kingdom and Dubai, United Arab Emirates and have a small team. Their services include cybersecurity, cloud consulting & SI, web development, mobile app development, and more. The company was established in 2021.
Industries
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RSK Cyber Security was hired by a sales software company to provide cybersecurity services. The team was tasked with identifying security gaps, risk scoring, managing APIs, and recommending security solutions.
"They demonstrated their deep understanding of the product security threat landscape."
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15
- Undisclosed
- 2 - 9 employees
- Middlesbrough, United Kingdom
Sencode Cyber SEcurity is a cybersecurity company. Their small team is headquartered in Middlesbrough, United Kingdom. Their services include cybersecurity. The agency was launched in 2019.Visit Site -
16
- $1,000+
- 2 - 9 employees
- London, United Kingdom
Cynance, a cybersecurity company, was founded in 2019. The small team focuses on cybersecurity. The firm is in London, United Kingdom.Visit SiteIndustries
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17
- Undisclosed
- 10 - 49 employees
- Belfast, United Kingdom
Nimbus is a small Belfast, United Kingdom-based IT managed services and cybersecurity company. Launched in 2010, the team specializes in IT managed services and cybersecurity.Visit Site -
18
- Undisclosed
- 250 - 999 employees
- Nottingham, 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.Visit SiteIndustries
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19
- $5,000+
- 2 - 9 employees
- Belfast, United Kingdom
Cloud consulting & SI and cybersecurity company Vertical Structure is located in Belfast, United Kingdom. The small team offers cloud consulting & SI and cybersecurity and was founded in 2006.Visit SiteIndustries
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20
- $5,000+
- 10 - 49 employees
- London, United Kingdom
Based in London, United Kingdom, MIK LIONS is a small cybersecurity company. Established in 2015, the team focuses on cybersecurity.Visit SiteIndustries
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21
- $5,000+
- 2 - 9 employees
- Oldbrook, United Kingdom
Precursor Security is a cybersecurity company in Leeds, United Kingdom. Launched in 2018, the small team focuses on cybersecurity.Visit SiteIndustries
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22
- $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.Visit SiteIndustries
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23
- Undisclosed
- 10 - 49 employees
- London, United Kingdom
Data analytics company Hazy is headquartered in London, United Kingdom. The small team offers BI & big data consulting & SI, Artificial Intelligence, cybersecurity, and business consulting. The firm was established in 2017.Visit SiteIndustries
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24
- $5,000+
- 10 - 49 employees
- London, United Kingdom
Lineal is a small business consulting company. Based in London, United Kingdom and Hong Kong, Hong Kong, the firm was founded in 2009. Their services include business consulting and cybersecurity.Visit SiteIndustries
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25
- Undisclosed
- 250 - 999 employees
- Lincoln, United Kingdom
Big data company GCI was launched in 2001. They are located in Lincoln, United Kingdom; Calder Grove, United Kingdom; Salford, United Kingdom and Derby, United Kingdom and have a midsize team. GCI offers BI & big data consulting & SI, cloud consulting & SI, unified communications consulting & SI, IT managed services, and more.Visit SiteIndustries
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26
- $1,000+
- 10 - 49 employees
- Adderbury, United Kingdom
Custom software development company ST Engineering Antycip was founded in 1996. Their small team is located in Argenteuil, France; Saronno, Italy and Adderbury, United Kingdom. ST Engineering Antycip offers custom software development, AR/VR development, and cybersecurity.
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27
- $1,000+
- 10 - 49 employees
- Stourbridge, United Kingdom
Cybersecurity company Superfast IT is in Stourbridge, United Kingdom. The small firm was founded in 2002. Their team provides cybersecurity, IT managed services, IT strategy consulting, and cloud consulting & SI.Visit SiteIndustries
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28
- $1,000+
- 50 - 249 employees
- Warrington, United Kingdom
CloudCoCo Plc, a midsize IT managed services company, is headquartered in Warrington, United Kingdom and Birstall, United Kingdom. They provide IT managed services, cybersecurity, cloud consulting & SI, and IT strategy consulting and were founded in 2004.
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29
- Undisclosed
- 10 - 49 employees
- Whitchurch, United Kingdom
Infosec Partners, a cybersecurity company, is in Whitchurch, United Kingdom. Founded in 2004, the small team specializes in cybersecurity.Visit SiteIndustries
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30
- Undisclosed
- 250 - 999 employees
- Royal Leamington Spa, United Kingdom
LRQA Nettitude, a cybersecurity company, is in New York, New York and Royal Leamington Spa, United Kingdom. The firm offers cybersecurity, IT managed services, compliance consulting, IT strategy consulting, and more and has a midsize team.The firm was launched in 2003.Visit SiteIndustries
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