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Top Tech Companies (115)

Cloud • Information Technology • Cybersecurity
London, England
41 Employees

TiG provide award-winning cloud transformation services, unified communications and infrastructure solutions. Our breadth of consulting and managed services are what set us apart, helping you shape your IT strategy and create the strongest technology platform for your business. For more than 15 years, customers have relied on TiG to help them make the smartest technology investments and to provide ongoing support for their core business infrastructure. In this time, we have maintained a 95% customer retention rate. TiG’s management team are well known and respected within the IT industry. With a long track-record of running successful IT services businesses, they have built up strong relationships and valuable good-will with the leading vendors. This depth of skills, experience and leadership ensure that TIG is a strong, stable business offering the very best levels of service and support. TIG is wholly focused on customer success. This means taking the right approach for each business and each business application. Customers benefit from the choice of on premise or cloud solutions, or a combination of both. We also offer the flexibility of using our own, highly secure, data centres or a partner of your choice. Our technical expertise and strategic partnerships with technology vendors such as Microsoft, VMWare and Cisco, give you even greater confidence and flexibility. We currently hold the following Microsoft competencies: Gold Cloud Platform Gold in Cloud Productivity Gold ISV Partner Tier 1 Cloud Service Provider Direct Cloud Service Provider Premier Support Partner In March 2021, TiG acquired ThirdSpace, one of the UK’s leading experts in identity management and enterprise mobility and security solutions – creating an advanced digital MSP (managed service provider) with cyber security capabilities.


Information Technology • Software • Cybersecurity
2 Offices
312 Employees

Chess is one of the UK’s leading technology solutions providers, helping over 33,000 businesses grow through proven technology and expert advice. Relationships with all major UK networks and technical capabilities across Voice, & Connect, ICT, CyberSecurity and Digital allows us to design, deploy and support our customers to grow efficiently, work from anywhere, safeguard their businesses and better connect with their customers. Our customers are at the heart of our decision making and we believe that listening to and knowing our customers plays a big part in our vision of being ‘a great place to be a customer’. We are proud to have won both the ‘Institute of Customer Service - Quality Service Provider of the Year award’ and the ‘Customer First Award’ for the quality service we provide our customers. Not only do we pride ourselves on our award winning service and solutions, we are extremely proud that our 550 people voted us No1 in ‘The Sunday Times 100 Best Companies to Work for’ list 2018 after 9 consecutive years in the top 100, including 3rd in 2015 and 2nd in 2016 and 2017. But don’t just take our word for it. Contact us to find out how the Chess team can help you.


Information Technology • Cybersecurity
London, England
17 Employees

Identify & Manage Cyber Risks At Scale, with DynaRisk. Our mission at DynaRisk is to provide families and small and large businesses worldwide with the tools they need to face the increasing number of cyber threats. We offer a variety of easy-to-use cyber software solutions, along with cyber risk intelligence and helpline services, backed by our market-leading threat intelligence capabilities for personal and business cyber risk management. Our insurance, loyalty and benefits, and managed service provider clients from across the globe, partner with us to integrate our solutions into their offerings for their customers. Our partners use our software and services to improve loss ratios, increase engagement, drive new business and reach more customers. Find out more: https://dynarisk.com/about-us


Information Technology • Consulting • Cybersecurity
Maidenhead, England
160 Employees

Performanta, the global purple tribe, delivering the bedrock of quality cyber security services to our customers, enabling them to do business safely. Founded in 2010 with Offices in the UK, North America, South Africa and Australia, Performanta employs over 140 people globally with an amalgamation of over 1,000 years of experience, servicing satisfied customers in more than 50 countries worldwide. At Performanta, we hire only the best people to join our Purple Tribe, a passionate group of highly motivated, empowered and successful employees. We work hard and are committed to the values of our company.


Information Technology • Cybersecurity
3 Offices
155 Employees

Transputec is an Award-winning IT Services Partner that offers extensive solutions to help businesses optimise their IT infrastructure and enhance their cybersecurity posture and evolve with digital transformation. With over 35 years of experience, Transputec leverages cutting-edge technologies and industry best practices to deliver innovative and customized solutions that meet the unique needs of each client. From cloud migration and managed services to advanced threat detection and response, Transputec helps organisations of all sizes stay ahead of the curve in a rapidly evolving digital landscape. Your trusted Technology Partner. Transputec also specialises in creating award-winning bespoke software that’s reliable, flexible and well supported from concept to delivery. As one of the best Software Development Companies we design and develop digital content, websites and mobile applications that drive business growth. We are one of the largest Business Transformation and Consultancy providers in the UK with in-house expertise, proven methodology and track record. We believe in flexibility, quality, and agility. We see this simply as the ability to grow our services as quickly and with speed our clients expect, whether they are enterprises or small/medium-sized organisations. You may contact us anytime 24/7 for a Free Consultation if you are seeking an IT support company OUR MISSION "We create value by translating complex technology into convenient productised services delivered by skilled and responsive people."


Fintech • Financial Services • Cryptocurrency • Cybersecurity
6 Offices
519 Employees

Amber Group is a global leading digital asset company providing crypto financial services to both institutional and high-net-worth investors globally. We offer best-in-class liquidity solutions and cutting-edge trading infrastructure across major exchanges, applications, and networks. With over $1 trillion in cumulative trading volume, our deep liquidity helps power the digital asset ecosystem. Beyond trading, our full-suite of offerings includes wealth management, lending and investing products. But at our core, we focus on building strong relationships and delivering personalized service to help clients navigate this fast-growing industry. At Amber, security is our #1 priority. We have invested years of effort and millions of dollars in cybersecurity, crypto-security, and operational security across the firm, with industry-leading certifications like SOC 2 Type II and ISO 27001. Powered by a 400+ team of traders, technologists and engineers operating 24/7 globally, our technology and research capabilities are world-class. Yet we remain entrepreneurial, always seeking fresh ideas and risks worth taking. We are always interested in people who have an appetite for taking calculated risk, demonstrate a high level of original thinking and intellectual curiosity. Curious developers and problem-solvers, please say hello at [email protected].


Information Technology • Cybersecurity
London, England
48 Employees

Over 60% of organisations have experienced a cyber incident caused by a compromised third-party. Recent data protection and business resilience laws and regulations globally have included specific obligations for organisations to actively manage supply chain security risks. Risk Ledger provides all the tools you need to run a comprehensive, security-led, third-party risk management programme against your supply chain. The platform moves away from point-in-time assessments by providing you with real-time, actionable data collected directly from suppliers - allowing you to continuously identify, measure and manage a comprehensive set of third-party risks at speed and at scale for a low, per-supplier cost. Our unique network model gives you visibility of supply chain risks beyond third parties to fourth and fifth parties too. Contact us to find out how we can help you to manage risks in your supply chain and follow us on LinkedIn for relevant news and announcements.


Cloud • Information Technology • Cybersecurity
2 Offices
227 Employees

Over 25 years as an Enterprise performance partner for Cloud, Cyber and IT Collaboration, Data Centre Services and Sustainability. ​Today, every organisation can access pretty much the same IT.​ But not the same IT performance. We provide our clients with sustainable competitive advantages by wrapping world-class cloud technologies in first-class service. Our Professional Services provide deep expertise. ​Our Managed Services deliver lean, ‘always-on’ ​peace of mind. ​And our secure Cloud, Communication and Collaboration platforms power high-performance, hybrid teams. ​ What we do is combine these services with a team that’s given permission to promise more, backed by a service commitment to deliver more. ​What you get is Technology. Only better.


Software • Cybersecurity
4 Offices
358 Employees

BioCatch is the leader in Behavioral Biometrics which analyzes an online user’s physical and cognitive digital behavior to protect individuals and their assets. Our mission is to unlock the power of behavior and deliver actionable insights to create a digital world where identity, trust and ease seamlessly co-exist. Leading financial institutions around the globe use BioCatch to more effectively fight fraud, drive digital transformation and accelerate business growth. With over a decade of analyzing data, over 60 patents and unparalleled experience, BioCatch continues to innovate to solve tomorrow’s problems.


Big Data • Information Technology • Machine Learning • Security • Cybersecurity
4 Offices
238 Employees

Tessian’s mission is to secure the human layer. Using machine learning technology, Tessian automatically stops data breaches and security threats caused by human error - like data exfiltration, accidental data loss, business email compromise and phishing attacks - with minimal disruption to employees' workflow. As a result, employees are empowered to do their best work, without security getting in their way. Founded in 2013, Tessian is backed by renowned investors like Sequoia, Accel, March Capital, and Balderton and has offices in San Francisco, Boston and London.


Internet of Things • Cybersecurity
5 Offices
985 Employees

Forescout Technologies, Inc. actively defends the Enterprise of Things by identifying, segmenting and enforcing compliance of every connected thing. Fortune 1000 companies trust Forescout as it provides the most widely deployed, enterprise-class platform at scale across IT, IoT, and OT managed and unmanaged devices. Forescout arms customers with more device intelligence than any other company in the world, allowing organizations across every industry to accurately classify risk, detect anomalies and quickly remediate cyberthreats without disruption of critical business assets. Don’t just see it. Secure it.


Software • Cybersecurity
London, England
32 Employees

We’re on a mission to help enterprises ensure their communication tools are secure, compliant and efficient. Valarian’s software allows multinational organisations to make the communication tools they already use compliant with data sovereignty, protection and privacy laws across jurisdictions worldwide. Valarian’s resilient, scalable platform can be deployed into any environment (on-prem, cloud, or hybrid) and easily integrates with existing business collaboration tools like Microsoft Teams and WhatsApp, harmonising compliance, security and efficiency


Information Technology • Software • Cybersecurity • Defense
London, England
91 Employees

Make complex security toolstacks a thing of the past and gain efficiency with SenseOn, a consolidated cyber defence system. SenseOn is the single piece of software security stack, combining the capabilities of EDR, NDR, SOAR, SIEM, and AV into a single platform. By alerting accurately on genuine threats in a single system, SenseOn dramatically reduces noise from rapidly-increasing volumes of data, consolidates your security stack, and gives you full visibility into your cloud and on-prem IT infrastructure. The SenseOn platform captures all endpoint and network data natively in a consistent format and automatically contextualises this data, providing security teams with the necessary context to thoroughly understand and remediate threats. This unique approach to cybersecurity means that security teams can use a single system to capture rich data from across their estate in one unified data model without incurring the resource, inefficiency and financial costs associated with using several disparate security tools or from tools which are simply integrating disparate data under the hood. Founded in 2017 by David Atkinson, the first cyber specialist in the United Kingdom’s specialist military units, SenseOn brings together cyber security experts, former government cyber operatives and applied machine learning specialists. Pioneering a new approach to security, SenseOn was named the “Cybersecurity Innovation of 2019” by the Institute of Engineering and Technology (IET) and a World Economic Forum (WEF) Technology Pioneer in June 2021.


Cloud • Information Technology • Cybersecurity
5 Offices
6,774 Employees

Experis is a global leader in IT professional resourcing, project solutions, and managed services specializing in Business Transformation, Enterprise Applications, Cloud and Infrastructure, Digital Workspace and Cyber Security. As digital transformation and acute skills shortages in tech continue unabated, Experis provides talent with the powerful combination of in-demand technical skills together with the soft skills that are critical for business success. We can connect you to individuals with a specific skill set, manage capacity across a team, or deliver in-house technology experts to take your project to full delivery. Visit www.experis.com to learn more.


Big Data • Cloud • Information Technology • Other • Sales • Software • Cybersecurity
5 Offices
131 Employees

Graylog specialises in delivering top-notch Threat Detection, Investigation, & Response (TDIR) solutions, backed by our latest addition, the Graylog API security platform. As a renowned centralised log management (CLM) and Security Information Event Management (SIEM) provider, we offer unparalleled fast and efficient log analysis capabilities in critical areas such as security, compliance, operations, and DevOps. Our enterprise solution enables organisations globally to capture, store, and analyse terabytes of machine data in near-real time while our open-source product has been deployed in more than 50,000 installations worldwide, empowering individuals and small teams to perform basic log consolidation, analysis, and search functions at no cost. Recent achievements for Graylog have been inclusion in the 2021 Deloitte Technology Fast 500™, we took home two of the most prestigious cybersecurity awards in SIEM and DevSecOps from Cyber Defence Magazine at RSA in 2023, and 2024 has seen us take home gold and become the Globee Winner for Security Information & Event Management and the 2024 Globee Winner for Threat Hunting, Detection, Intelligence, and Response.


Cloud • Machine Learning • Security • Software • Cybersecurity
2 Offices
781 Employees

Telesign provides continuous trust to leading global enterprises by connecting, protecting, and defending their digital identities. Telesign verifies over five billion unique phone numbers a month, representing half of the world’s mobile users, and provides critical insight into the remaining billions. The company’s powerful AI and extensive data science deliver identity with a unique combination of speed, accuracy, and global reach. Telesign solutions prevent fraud, secure communications, and enable the digital economy by allowing companies and customers to engage with confidence.


Big Data • Cloud • Software • Cybersecurity • Quantum Computing
8 Offices
75,792 Employees

Atos is a global leader in digital transformation with 110,000 employees and annual revenue of € 12 billion. European number one in Cybersecurity, Cloud and High-Performance Computing, the Group provides tailored end-to-end solutions for all industries in 73 countries. Pioneer in decarbonization services and products, Atos is committed to a secure and decarbonized digital for its clients. Atos operates under the brands Atos and Atos|Syntel. Atos is a SE (Societas Europaea), listed on the CAC40 Paris stock index. The purpose of Atos is to help design the future of the information space. Its expertise and services support the development of knowledge, education and research in a multicultural approach and contribute to the development of scientific and technological excellence. Across the world, the Group enables its customers and employees, and members of societies at large to live, work and develop sustainably, in a safe and secure information space.


Mobile • Software • Cybersecurity
London, England
35 Employees

Get your system tested by world-class Strikers and start making cybersecurity part of your development cycle. Strike is a global cybersecurity platform that helps companies be protected by detecting and fixing vulnerabilities in their systems continuously. This is achieved by implementing Pentestings that combine top talent and technology. These tests are performed by Strikers, a global community of world-class ethical hackers that have international recognitions and certifications.


Cloud • Information Technology • Cybersecurity
3 Offices
257 Employees

Welcome to Aspire Technology Solutions! We are an award-winning IT Managed Service and Cyber Security Provider. We deliver leading technology solutions across cyber security, cloud, connectivity, managed services and unified communications to help our customers drive real business benefits. Our mission is to deliver technology like no other; we are dedicated to putting technology to work to help our customers innovate, become more efficient and grow quicker. We help our customers accelerate their ambitions through inspirational technology and to achieve this, we have a passion for delivering a sensational data-driven customer experience. To make sure we’re on track, we measure our performance using the Net Promoter Score (NPS) global measure. In the past 12 months our score has averaged +82 which is deemed ‘world-class’. At Aspire, we design and deliver innovative IT solutions that drive organisations forward. In a world that’s changing faster than ever, we expect our customers to expect more from their technology.


Machine Learning • Software • Analytics • Cybersecurity
London, England
50 Employees

Venari Security provides organisations with advanced visibility into their encrypted attack surface, ensuring regulatory compliance and privacy adherence through our cryptographic discovery tool. Our focus is on crypto agility which helps you assess both external and internal cryptographic risks, preparing your business now and for the quantum future