SecuriGroup is one of the UK’s leading security companies providing a wide range of security services including manned guarding, retail security, key holding, systems and event security. SecuriGroup Services Limited holds SIA approved contractor status for the provision of Door Supervision, Security Guarding, CCTV, Close Protection and Key Holding.

Securikey are a leading supplier of safes, key safes, padlocks and other security products. Established in 1973, Securikey has been a trusted partner to many UK companies and institutions, supplying a comprehensive range of innovative safety and security products which meet even the most demanding of environments and specifications.

Securipol Security Services provide alarm response, security guards and security systems such as CCTV, intruder alarms and access control to businesses, private homes and the public sector in Oxford, Banbury, Newbury, Abingdon, Aylesbury, High Wycombe.

Securiscape provides regional and national governments with counter-terror and counter surveillance solutions. The company's portfolio includes barrier planters, steel security bollards, security steel furniture, and manual rise/fall blockout kerbs for vehicle disabling and stopping.

Originally founded in Bristol, UK, SECURIST began with an experienced team of individuals with a wide range of backgrounds from within the security industry. Over the course of their time as one of the leading security companies and establishments, they have built up a large client base with many contracts specializing in manned guarding and event security at the very core of their operations in the South West.

Securitas, a market leader in security, with over 280,000 employees, operating in 45 countries. The company offers a wide range of customers in a variety of industries and segments with services like guarding, mobile and monitoring, keyholding & alarm response (both commercial and domestic), mobile patrols, a locks and unlocks service for commercial premises and lone worker protection/escort services.

Securitec Systems is a Cannock, Staffordshire based company specializing in security equipment. These include CCTV systems, plus intruder alarms and intercom systems for personal and business uses.

Established since 1984, Security and Electrical Services has been providing seamless integration of all security requirements, tailored security solutions incorporating intruder alarms, CCTV and access control customized approach comprehensive servicing and support. The company offers access control solutions, such code only access control, proximity cards and readers, etc.

Security 1 is a company specializing in the design installation and servicing of high quality electronic Fire and Security Systems. Security 1 provides services in the following areas, intruder alarms, fire alarms, fire extinguishers, CCTV and access control.

Security 201 have been supplying and installing high quality security systems and products since 1983. Security 201 can design, install and maintain a range of security systems and products to exceptionally high standards.

Security 4 All is a UK website where you can buy the very best security products with confidence and at trade prices. Every single product has been carefully selected by industry professionals and undergone the most rigorous testing procedures to ensure it will live up to customers' expectations.

Security Access Systems Ltd is a UK based business, servicing the needs of the Security industry for over 15 years through the installation, maintenance and service of all types of automated systems for the domestic and commercial sectors. They supply and install sliding, single and double leaf gates, car parking systems, automated barriers, external and internal turnstiles.

Established in 1984, Security Alarm Services is the area's premier supplier of alarm, CCTV and monitoring equipment. Its wide spectrum of both business and domestic customers can be found throughout Herefordshire, Gloucestershire, Monmouthshire and the surrounding areas. In 1987 and 1988 Security Alarm Services were proud to provide security solutions for the Miss World competition in London.

Security Alert is a Midlands based company in Derby which formed in 1997. They are a privately owned British security and risk management company with substantial experience within the security industry.

Security Alliance Limited is a UK based information security services company, founded in 2007 and specializing in the provision of highest quality, award winning security testing and monitoring services. Their security monitoring services provide 24 * 7 protection of clients’ information assets through the continuous monitoring, detection and analysis of security events from over 2000 network devices, servers, applications and databases.

Security Blue Team is a company producing high-quality community events, including CTFs, defensive security operations, and training labs. SBT also offers practical defensive cyber certifications, backed by an Academic Advisory Board comprised of industry experts.

BSides is a community-driven framework for building events for and by information security community members. The goal is to expand the spectrum of conversation beyond the traditional confines of space and time. It creates opportunities for individuals to both present and participate in an intimate atmosphere that encourages collaboration.

Security by Design is a London-based systems integrator. The company offers a wide range of security solutions including CCTV, access control, intruder alarms, information protection, burglary prevention, door entry systems, etc. for commercial and domestic clients. Security by Design provides services from concept through installation to after sales service, system takeover and maintenance.

Established in 1985, Security Centres is one of the largest privately owned fire and security companies in the UK. Security Centres are NSI Gold Accredited (National Security Inspectorate) for the design, installation and service of CCTV, Access Control, Fire and Intruder detection systems. The company offers a fully integrated package which includes, design, project management, installation, commissioning and maintenance.