Cybersecurity Solutions

Cequence Security UK

API and application security platform protecting against business logic abuse, fraud, and bot attacks at runtime.

Chainalysis

Chainalysis provides the blockchain data platform used by government agencies, cryptocurrency exchanges and financial institutions to investigate illicit activity, manage compliance and prevent fraud. The platform covers transaction monitoring, workflow automation for regulatory, tax and compliance use cases, and protocol security for crypto businesses. Nine of the top ten cryptocurrency exchanges use Chainalysis, and more than 50 regulators worldwide use its data. Over 1,500 customers participate in its shared intelligence community, and Chainalysis data has supported the seizure, freezing or recovery of $34 billion in illicit funds.

Chaleit

Cambridge-based cyber security consultancy offering penetration testing with aftercare, adversary simulation, red and purple teaming, DevSecOps engineering, AI security, cloud security services, and governance, risk and compliance support. Its advisory work aligns business context with technical capability to solve complex risks. Clients include Meltwater, Lookers, MarTrust and Murdoch University across sectors such as financial services, healthcare, logistics and education.

Chronicle Online

UK time and attendance management system offering biometric, facial recognition, and cloud-based workforce tracking solutions.

Cintoo US Inc.

Cintoo provides a cloud-based platform for reality capture data, enabling users to upload, process, visualize and manage 3D scan datasets from any laser scanner or device. It serves professionals in construction, engineering and facility management by offering tools for BIM integration, digital twin creation, AI-powered classification and immersive VR access to scan data.

Cintra HR

Cloud HR, payroll, and absence management software for UK organisations with BACS-approved payroll and real-time reporting.

Cipher Knights

Cipher Knights is a Leicester-based cybersecurity and IT support company serving UK small businesses. It prepares organisations for Cyber Essentials and Cyber Essentials Plus certification, carries out penetration testing and vulnerability assessments, configures firewalls and VPNs, and provides managed IT helpdesk support. Additional services include Microsoft 365 cloud hardening, business Wi-Fi and LAN/WAN installation, incident response, security posture reviews with UK GDPR guidance, and phishing awareness training.

Citrix UK / Cloud Software Group

Civio

Claap

Async video and screen recording platform for sales teams with AI transcription and meeting insights.

ClearShield Cyber

ClearShield Cyber provides cyber security services and software development for small and medium businesses across the United Kingdom. Its Cyber Health Check is a permission-based review of email, passwords, multi-factor authentication, devices, backups and customer data, producing a risk summary and prioritised action plan aligned to National Cyber Security Centre advice. The company also builds secure websites, browser-based web applications and local-first desktop tools with encryption, access control and recovery testing built in.

ClearYolk

ClearYolk provides cyber security and data protection services to organisations in Exeter and across the UK. Its solutions cover advanced threat detection, data integrity controls, audit-ready reporting and backup, supporting compliance with frameworks including NIST, HIPAA, GDPR and cyber insurance requirements. Support is delivered by UK-based staff, with global data centres used to maintain data sovereignty. Clients include schools, trusts and other organisations handling sensitive data.

CloudIBN

CloudIBN provides managed cybersecurity and cloud services, certified to ISO 9001:2015, ISO 20000:2018 and ISO 27001:2022, with more than 26 years of industry experience. Services include 24/7 managed SOC, cloud security, vulnerability assessment and penetration testing, multi-cloud management, identity and access management, and GDPR compliance support. The company holds Solution Partner status with Microsoft and AWS, serving more than 1,200 clients across 10 or more countries. Teams include certified ethical hackers, ISO 27001 auditors, solution architects and cloud security engineers.

CloudSEK

CloudSEK provides a graph-based predictive attack path intelligence platform that correlates identities and exposures into attacker kill chains and disrupts them before exploitation. The platform covers digital risk, threat intelligence, external attack surface, AI system security and third-party ecosystem monitoring. AIVigil is CloudSEK's AI attack surface monitoring module that discovers, monitors and secures exposed AI infrastructure, MCP servers, vector databases, agentic workflows and shadow AI assets. More than 1,000 cybersecurity teams use CloudSEK products globally. CloudSEK raised $19 million in a Series B1 round.

Coates IT

Coates IT supports small and medium businesses across East and Central Scotland - we offer IT support, managed backups, wifi and telephone systems. Working from home is our speciality.

Cogent Distribution

UK and Ireland private 5G network solution provider deploying secure enterprise wireless for industry.

Cognitous Cyber Security

Cognitous is a Wigan-based cyber security firm helping organisations protect critical IT infrastructure and customer data. Services include penetration testing, red team engagements, Cyber Essentials certification, secure code review, technical due diligence and incident response. It also runs training courses covering security awareness for IT users, secure development for technical staff and penetration testing for software testers, with focus on developers, small businesses and smart technology.

Collabora

Open source software consultancy providing Linux, kernel development, and embedded systems engineering.

CompTech Solutions

CompTech Solutions designs, engineers, manufactures and tests secure IT solutions that meet government and military security standards. Based in Basingstoke, it specialises in TEMPEST and CEMA engineering, protecting commercial off-the-shelf equipment from eavesdropping via electromagnetic emissions. Serving government, MOD and NATO allied partners, it delivers information assurance through an end-to-end process spanning scoping, production, deployment and ongoing support.

Complete I.T.

Complete IT provides managed IT, cybersecurity, data protection, and help desk support services. Serving small to mid-sized businesses in Austin, including healthcare practices, law firms, retail shops, architecture, engineering, construction, and professional service providers, the company manages computing infrastructure, system monitoring, backups, and network solutions.

Consider IT

Convergint UK

Convergint is a security systems integrator that designs, implements and manages technology-enabled solutions including access control, video surveillance, intrusion detection and security operations centres.

Convex

Reactive backend-as-a-service with real-time database, serverless functions, and file storage for web apps.

CookieYes

GDPR and CCPA cookie consent management solution trusted by 1.5 million websites globally.