‘SQR group’ is one of the leading companies in the Global market providing a broad spectrum of security solutions, consultation services and the implementation of security plans based on thorough risk assessments and threat evaluations. Security, Quality and Reliability are the foundations of the company and they are what distinguishes ‘SQR group’ from other companies in the UK market in particular, and the Global market as a whole.

Square Box Systems Limited is a UK software company, specializing in workflow management tools for the global film and broadcast industry. It is the developer of the Queen's Award winning suite of CatDV media asset management tools.

At SR Fire & Security Ltd, they specialise in the design, installation, commissioning and maintenance of all systems within the fire and security industry. They serve both residential and commercial sectors in Donaghadee, Bangor, Holywood, Belfast, Lisburn, Crumlin, Newtownabbey, Carrickfergus, Ballyclare, Antrim, Larne, Downpatrick, Ballynahinch and Dromore.

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.

As a specialist Certification Body, SSAIB holds wide scope of accreditation within the specialist fields of security services, electronic security and fire systems, Telecare services, monitoring, guarding services, and fire risk assessment. The objective is to provide comprehensive range of certification services within these specialist sectors. SSAIB's goal is to promote high standards of service within security and fire communities.

SSE Renewables is a major developer and operator of renewable energy generation, headquartered in the UK and Ireland, with a growing presence internationally. They are committed to delivering the green energy the world needs now and in the future. Part of the SSE plc group, they have an operational portfolio of around 4GW of onshore wind, offshore wind and hydro generation, with a secured future project pipeline of over 15GW in development

SSEN Transmission plays a critical role in the transition to a low carbon future, developing, building, maintaining and operating a network for net zero.

ST Fire & Security offers a full range of professional fire & security services, to accommodate domestic and commercial properties, operating from Manea, March, in Cambridgeshire, United Kingdom.

StadiumTM is a UK based company that provides traffic management, stewarding, security and training services to national and international events. StadiumTM specializes in protecting crowded spaces with the aid of hostile vehicle mitigation barriers. The company also offers training and facility management solutions.

Stamford Security Services Limited is a security manned guarding service provider company covering Bracknell and allover United Kingdom. The company entered the security market with the intention of gaining a strong position through their extensive knowledge and quality services. They take great satisfaction from meeting the requirements of their clients, which has allowed them to ensure the continual growth of the company.

Established in 1992, State Digital Security Ltd. installs security alarms in the home and security systems for business premises. The company is headquartered in Cranleigh, Surrey and its services cover London, the Home Counties and the South of England.

Stega UK Limited provides managed cyber security services, securing enterprises and businesses against internal and external cyber-attack threats. They work to prevent bad things from happening to organizations, like data breaches and services disruptions, and protect the company's reputation and compliance posture.

Stewart Intruder Alarms Ltd offers security products like CCTV with solid after sales support in Belfast. The company provides a wide range of security services and equipment in Belfast. Security services include a variety of jobs ranging from personnel services, equipment and devices, along with the planning and deployment necessary to make them effective.

STM Group (UK) Limited is an award-winning company, providing bespoke manpower service solutions. It specialises in the delivery of high-quality security, cleaning, and customer-focused, services, underpinned and supported by leading edge technology.

StorMagic is making the complex simple for edge computing environments, and they’re pioneering the industry in bringing the edge to the core - datacentre and cloud. Their storage and security products are simple, lightweight and cost-effective without sacrificing enterprise-class features for organizations with one to thousands of sites.

Strings Security Limited is a buyer's guide offering products and services to the Security Industry. The company provide information on companies who provide the products and services its clients need ranging from Access Control Systems to X-Ray Screening and everything inbetween. Based in Europe and Middle East, Strings Security enables quick and easy search for suppliers, products and services for the Security Industry.

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.

Stroud Alarms Ltd is Gloucestershire’s provider in specialist fire, safety and security solutions for domestic or commercial concerns. The company offers access control, barriers and gates, CCTV, emergency lighting, fire alarms, fire extinguishers, lone worker devices, intruder alarm and monitoring services etc.

The Student Loans Company is a non-profit making Government-owned organization set up in 1989. They provide technology and financial support for people studying at universities and colleges throughout the United Kingdom.

Sum Security an independent SSAIB Registered company based East Sussex providing installation, maintenance, repair and monitoring of high quality burglar alarms, CCTV systems, police monitored intruder alarms, access control and maintenance for home and business properties throughout the South East covering forest row, East Sussex, Kent, Surry and East Sussex.

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.