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.

Security Center is a service driven company with total security solutions for homes and businesses. They run their own monitoring centre which is open 24/7. From there they manage their fleet of security guards on patrol cars who are always ready and prepared to react if needed.

Security Control Company (SCC) is an independent organisation. They are regional leaders in providing programme management, procurement and logistics support, and risk management to industry, and to government ministries and agencies. The company delivers a wide range of integrated security solutions installed to high standards of design, provides good “after sales” support, and has a track record of delivering projects smoothly and on time.

Security Group is a modern Danish security company, which works independent of special interests of any kind - political, economic or supplier interests. They provide effective, reliable solutions and create security for their customers, both private, business and government.

The Security Industry Institute (SII) was set up in September 2007 to offer nationally recognised and comprehensive professional security training and quality job placements for security personnel. SII aims to enhance the security industry’s professional and operating standards and employability of the workforce through various skills upgrading initiatives.

Security Resources is a multi-faceted security guard and investigative solutions firm which provides comprehensive and quick response security offerings to public and private clients in the US, CA and PR.

Security Roma Management employs highly qualified personnel, including trustees, entertainment and show business supervisors, security guards, operations center operators, and a fleet of vehicles for day and night inspections with patrol cars (service patrols) that allow for prompt and efficient 24-hour interventions and daily problem resolution (emergencies).

Secutel Technologies specialises in visual verification-based intrusion detection and physical security solutions. The company also covers security workforce management, access control, and facial recognition.

Selex ES is an electronic and information solutions for defence, aerospace, space, security, high-integrity surveillance, network management, information security and mission-essential services. Selex ES undertakes works like control and monitoring of air and maritime traffic, the surveillance and protection of green and blue borders, cyber security, secure communication networks. Selex ES's operates from Italy & UK and has offices worldwide.

Selous Security are a SIA training provider for door supervisor, security guarding and physical intervention.

Senator Security Services Ltd: Established 1997; a leading provider of integrated security for the Facilities Management sector. Manned guarding, key holding, alarm response, mobile patrols, front-of-house, CCTV remote monitoring and car park management for shopping centres, void and occupied property, business premises and NHS / healthcare facilities.

An affordable suite of network security services, including a Managed Network Detection and Response team, our unique Network Cloaking™ methodology, and CINS Active Threat Intelligence.

Sentinel Systems supply, install and service a range of vehicle safety solutions, including reversing radar, CCTV and award-winning cyclist protection systems ranging from RCVs and tippers to vans and buses.

SERIS offers solid security solutions for companies, public authorities and private individuals. They aim to optimise the quality and productivity of security through the combination of human services and technology solutions. The company has a global approach around security, technology, monitoring, logistics and academy covering all requirements and areas of competence related to the security sector.

Shetler Security International provides security services for some of the most well-known financial institutions in the United States, private companies, universities, and large events. The security services offered by Shetler includes security guards and roving patrol, corporate security, and surveillance and situational awareness.

Shield Asset Security Ltd is a long standing and trusted security guard hire and security services company. With many years experience in the industry Shield is your first choice for all of your security needs.

Show and Event Security has over five decades of experience in successfully planning and delivering a diverse portfolio of events. It also meets relevant SIA and BSIA codes of practice for event leisure requirements, with due regard to all relevant codes of practice and guidelines relating to sporting and stadium events.

Sight & Sound provides high quality and reliable security services throughout London, Kent, Essex, East & West Sussex and Hampshire. The company provides manned guarding, key holding & alarm response, remote monitoring services, etc. for factories, offices, retail, schools, construction sites, councils, hospitals and libraries, as well as other industries and businesses. Sight & Sound is a SIA Approved Contractor.

Supply, installation, repair and maintenance of CCTV Cameras, PC-based DVR, digital video recorder, mobile Vehicle DVRs, NVRs. They also supply, install, repair and maintain burglar alarms, fire alarms, automatic gates/garage, biometric/face recognition/ access controls.

Silvertrac is the provider of real time reporting software solutions. Their mobile-friendly security guard management software provides guard accountability through GPS tracking & real-time reporting, ensuring immediate, on-site accountability, instant alerts of critical issues for fast response, & improved employee performance.

Smart Grid Forums Ltd. are an independent conference production company serving the smart grid technical community. They monitor the market, conduct depth interviews with technical decision makers, and translate this into techno-commercial conferences that empower participants to accelerate their implementation plans and deliver exceptional results to their organisations.

Smartan Nigeria is a technology based company with specialty in the procurement, installation and maintenance of structural safety and security engineering systems. They provide skilled and innovative solutions for advanced building automation systems for residential, commercial and industrial clients.