Control Risks Group - Firm providing UK-based security consulting. Alderbridge Consultancy Ltd - Provides IT security consultancy services specialising in network security, firewalls, and vulnerability assessment. Aston Information Security - Offers services in the areas of information security, disaster recovery, business continuity and digital forensics. Blue256 Ltd - Offers network and internet security, installations and network support. commissum - Provides a range of information security services to a broad cross-section of businesses and government organisations. Corsaire Limited - Provides auditing, penetration testing, application testing and code reviews. Includes useful guides on security topics. Customroute Ltd - A UK based firm providing services in the areas of secure architecture, design, and implementation. Gradian Systems - Independent security consultants specialising in encryption, authentication, e-mail and enterprise compliance. Lighthouse Network Solutions - Provides network and security consulting and services. Located in Irvine, Scotland. SecureData - Supplies, installs, supports and manages secure network solutions. for security and networking technologies. Maidstone, Kent. Network Technology Solutions (UK) Ltd - NTS offers network and internet security design, implementation services and security management. Based in London and Bradford. NoFools - Experienced IT security advice and services. Located in the UK. StationX - Provides a full range of security services as well as software resources. Located in the UK. Jules Birch Associates - Offers independent consultancy and advice relating to I.T. security, disaster recovery planning and anti-virus systems. mi2g Limited - Digital risk consultants specialising in providing secure data visualisation. Also provide SIPS security intelligence briefings on hacker activity and various risk analysis tools. London, UK. ObjectSecurity Ltd. - Distributed systems security and building of integrated enterprise security solutions. online-edge Ltd - Provides network and Internet security consulting and services in Scotland. IsecT Ltd. - IT management consultancy specialising in information security, computer audit and other aspects of IT governance in the United Kingdom. iTrust Security - Specializes in helping organizations reduce risk vulnerabilities and protect corporate assets whilst extending reach to field workers and corporate users. Panoptech - Provides secure network design, storage and consulting services. Pentest Security Assurance - Performs security assessment and penetration testing services. Offers training in Oracle database security and penetration testing. Includes a collection of white papers and research links. Portcullis Computer Security - Information encryption and data security specialists. Providers of information security products and services. Sec-1 Network Security - Offers range of security consultancy services from managed firewalls to penetration testing. Securion Technology Ltd. - An independent consultancy specialising in Network and Information Security solutions and services. Located in Swansea, Wales, UK Trusted Management Ltd - Specializes in operational risk management, BS7799 compliance reviews, policy and procedure development, security architecture development. Armana Security Ltd - Offering services on email management, firewalls, policy management, intrusion detection systems and BS7799 compliance. Red Kestrel Consulting - Provides IT security consultancy and software development services. Context Information Security - Offers a holistic approach to information security, independent advice and provides managed services where ongoing assistance is required. Signal NetworksLtd - Provides a range of security solutions and services, based in Bristol UK Dionach - Penetration Testing, Security Vulnerability Assessments and Ethical Hacking including Network, Web Application, and Internal Penetration Tests NSS Labs - Security and certification consultancy services. Amethyst Risk Management Limited - Provision of information security and system safety consultants for government and commercial clients. Specialising in the identification and management of risk. EnableSecurity - Dedicated to providing high quality Penetration Testing, Vulnerability Research and VoIP Security Consultancy Evolution of Security - Home of Duncan Alderson, Security Gopher. This is my Security blog. Castleforce IT Consultancy Ltd - IT Security specialists helping businesses choose the best security products which satisfy the specific requirements, compliance guidelines and regulations. Mandalorian Security Services Ltd - Provides a range of information assurance and advisory services, with a focus on high-end Enterprise security, technical services and information security management. Turnkey Consulting - Specialises in the implementation and review of SAP Security and Portals solutions as well as expertise in the implementation of the Governance, Risk and Compliance (GRC) product range. Secforce - IT security consultancy. Offers penetration testing, web application testing and source code review.