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.

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 centers, void and occupied property, business premises and NHS / healthcare facilities.

SGD Security Ltd is a well established independent security company operating out of South Wales offering a National Service. SGD Security Ltd can design, install, commission and maintain intruder alarm systems, intruder alarm systems with 24 hour monitoring, digital CCTV, CCTV with 24 hour monitoring, IP CCTV, thermal imaging CCTV, access control, vehicle gate and barrier access control, networked multisite access control, etc.

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.

Simpli Security is a UK based online retailer offering a huge range of security products including intruder alarm systems, CCTV cameras, money counters, safes, convex mirrors, traffic mirrors, metal sheds, storage sheds, bike storage, safety mirrors, barriers, car park barriers, bollards, bike racks, crowd/ queue control and much more.

Smoothwall develops intelligent student safeguarding and well-being solutions designed to protect users worldwide. Smoothwall offers the only 100% real-time content web filtering solution with anti-malware, deep packet inspection, anonymous proxy detection and more. They also offer intelligent web filtering, monitoring and security solutions designed to protect users worldwide.

Sold Secure is the premier testing and certification house for security products. The organization is dedicated to reducing the risk of crime by the assessment of security products. Established in 1992 by Northumbria and Essex Police with the help and backing of the Home Office, Sold Secure is now owned and administered by the Master Locksmiths Association.

Sonic Security offers integrated security systems, access control, CCTV surveillance, as well as fire & intruder alarm systems. Sonic Security's access control and vehicle barrier entry systems allow the free flow of authorized people, while also denying entry to unwanted visitors. It also designs and installs camera surveillance with Remote Video Receiving Center (RVRC) facilities to meet requirements for loss & risk management control.

Sotatech Limited is a leader in design, development and sales of video security systems and supporting equipment ideal for any industry. The company offers new technologies, products, and services that constantly confirm their position as the security industry’s premier video systems and equipment trade tool.

Formed in 2000, Specialized Security Products Ltd has quickly established itself as a market leader in manufacturing and distributing locking products to the security industry. Such is the need of the industry we work in, our range has now gone far beyond just locking devices.

Spetsnaz Security International Limited provides professional close protection, bodyguard services, executive protection, and tailored security solutions for private clients, corporate clients, VIPs, and high-profile individuals. Established in 2016, the company provides professional CCTV camera installation, rental systems, 24/7 monitoring.

Squire is a pioneer of top-selling security products for the home, for work and on the move. With a 235-year heritage as an independent family-owned British lock manufacturer, they are uncompromising in their commitment to innovation, service and performance. They offer one of the most comprehensive padlock ranges made to World Class standards, continuing the tradition of making high-quality products to meet ever-evolving security needs.

Squire, founded in 1780 in England, is one of the world’s oldest and most respected lock manufacturers. Known for its commitment to high-quality security products, the company has been a leader in developing durable, reliable locks over many centuries.

Door Entry Direct has over 25 years experience in door entry intercom systems. Door Entry Direct manufactures their own range of products. Door Entry Direct manufactures products like access control, door entry, electrical locking, gate automation etc.

StrongBox Security Systesms is an SSAIB accredited, insurance approved company who both supply and install monitored burglar alarm systems connected to a dedicated 24hr monitoring station. The company designs and installs bespoke security systems for both the modern home and business premises. Specializing in intruder alarms, CCTV, access control, active fire systems, gate automation and lock smithing.

StrongGuard Security UK is an accredited, multi-faceted and award-winning national security and risk management provider, specialising in Manned Guarding, Monitoring & Response and Risk Services & Consultancy.

Based in Ashford, Kent, Sunray has been designing and manufacturing high specification steel security doors to protect commercial and industrial premises throughout the UK for well over thirty years. The company also offers security door locking options. Sunray manufactures and installs steel commercial doors, fire doors, security doors, industrial doors and louvre systems.

STS is one of Europe’s and Africa's most successful CCTV, security equipment, work wear, mobile payment terminals distributors and installers. Originally UK based, they have grown in to a global company with branches and distributors throughout the world.

Surelock McGill manufactures and installs high performance door locking and bolting systems, as well as ancillary products. Their products are tested for resistance to many forms of threat such as fire, blast, ballistic attack. They provide a wide variety of custom locks, including single-point and multi-point locks, and locks for blast protection.

Sword Services was founded in 1990 by Lawrence Sword and has established itself as a major player in the field of industrial electronic security solutions and gained a reputation for exceptional service and delivery. The success of Sword Services can be put down to a number of factors, not least the tight-knit team of industry experts and technicians assembled within what remains a family-run business.