Security Solutions are one of the UK’s leading manufacturers and installers of perimeter security equipment. With over a decade of experience in the industry the company offers a complete range of services including the design, installation, maintenance and service of new and existing equipment. Security Solutions offer a high quality range of manual and hydraulic or electro-mechanical automatic vehicle barriers.

Security Solutions Wales provides solution for all fire and intruder alarm requirements as well as CCTV and access control.

Security Systems Technology Ltd (SST) is a specialist, independent, security systems integrator with proven expertise in creating bespoke solutions to meet the needs of any business, small or large. As well as being pioneers in cutting edge security solutions like ‘Virtual Turnstile’ (VT) and fully integrated IP Megapixel CCTV surveillance systems, we also specialise in the installation of access control and biometric authentication.

SeeQuestor is an integrated software and hardware toolset, designed to dramatically increase the speed at which police and security teams analyse video as part of investigations. It is the complete solution for post-event analysis for law enforcement and security. SeeQuestor’s powerful video analytics can detect movements, faces and people, and index each video allowing for faster reviews and searches.

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.

Semlex relies on a broad experience in development, integration, operational management and supply of high technology systems in biometric identification and authentication.

Senator is an SIA approved contractor providing manned guarding, security guards, mobile security patrols, alarm response and key holding in London and South East England, the Midlands and Wales together with CCTV, remote monitoring & PSS; public space surveillance, PTS rail security; personal track safety and port security; PFSO security services.

Send For Help group is a lone worker protection provider in the UK, Europe and globally. Send For Help is comprised of the Skyguard and Guardian24 brands, & is also a developer of personal safety products, monitoring centre, software and infrastructure.

Serco Group plc is headquatered in Hampshire, United Kingdom. The company caters to markets in IT & BPO outsourcing, local government, home affairs, defence, science, nuclear, health, education, welfare to work and to the private sector.

Servest security services takes a professional and efficient approach, providing a secure environment whilst still preserving personal freedoms. We consider the impact that the delivery of our commercial security services has on employee welfare. We are also acutely aware of the effects security has on customer and visitor satisfaction, and public safety.

Sistemas Electrónicos y Telecomunicaciones, S.A. offers control access systems and time management, integrated and computerised alarm management platform and CCTV systems integration.

With over 20 years experience in the burglar alarm, intruder alarm, home security / CCTV and door entry industry, SG security systems are an established business, offering home security and business security solutions to customers throughout the local area. The business is situated in Stretford (Manchester). SG cover most of Manchester areas including Stretford / Sale / Urmston / Chorlton / Altrincham / Hale / Bowdon / Didsbury / Flixton.

SGW Security Consulting has been providing independent security risk management and security engineering consultancy services. Based in Edwinstowe, the company's team of independent multi-disciplined Consulting Engineers, Fire Safety Engineers and Security Consultants, CCTV Consultants and Project Managers, specialising in securing the Built Environment. SGW recommend security measures that address risk, protecting people, property, and assets.

Shenzhen Yingshixun Electronic Technology Co., Ltd. is an innovative company of Internet of Things technology. YSX Cloud Platform provides retailers, system integrators, consumer electronics manufacturers and service providers with the opportunity to easily and quickly integrate networked applications to create greater business opportunities.

Shield InfoSec Ltd is a specialist security risk consultancy practice delivering integrated security risk management solutions to small and medium size enterprises and multinational corporations, across the full spectrum of logical and physical security domains.

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.

SICPA is a privately owned company providing secured identification, traceability and authentication solutions and services. It was founded in 1927 and headquartered in Lausanne, Switzerland. SICPA is an international organisation with offices and factories on five continents. The company is organised around three global businesses: security inks; government security solutions; product and brand protection solutions.

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.

Sigma Engineered Solutions Ltd is a provider of fire & security systems such as access control, door entry, CCTV, intruder alarms & fire alarms. The company serves both domestic & commercial markets. Sigma Engineered Solutions Ltd installs and provides maintenance of burglar alarms & monitoring, photo ID system, fire alarm system as well as building management system.

Signicat is a provider of electronic identity and electronic signature solutions. Signicat deals with authenticating users, providing electronic signing, identity proofing, and document preservation. Their goal is to enable customers to do business more effectively by delivering great user experiences for the end users and at the same time reduce the risk by using advanced security technology.

Silicon Safe Ltd is a UK cyber security company that develops impenetrable network storage solutions in hardware, which prevent bulk data theft of secrets during a cyber-attack. The patent-pending ‘no-read’ technology isolates secrets at the hardware level – they can be stored and checked for accuracy, but it is impossible to steal them over connections to the appliance.