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.

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.

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.

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.

Sitewatch are consultants, installers and operators of automated fire and security systems. Services include CCTV, access systems, fire detection, security gates, remote management, biometrics, consultation, supply, installation & maintenance and project management. Whether clients' requirements are for stand-alone or fully integrated systems, Sitewatch can provide a tailored solution to every security requirement.

Skyguard provide the UK's premier personal safety service for lone workers and people at risk. The company offers a state of the art UK based 24/7 incident management centre certified to the highest industry standards, along with a range of best of breed personal safety devices.

Smart Integrated Solutions Ltd provide dynamic support and design / installation for Security / Integrated Facilities Solutions, with substantial experience in a variety of vertical markets and sectors. Further services include consultancy and TFM innovation for Facilities Management Companies. These solutions include CCTV, ANPR, Access Control, Security Systems and Integrated software platforms, to provide centralisation to clients of systems

Solutions In Security Limited was created to fulfil the growing market for Specialist Security Training and Personal Safety Training along with incorporating a pro-active Consultation Service for both the Security and Custodial market sectors.

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.

Spartan 24 Hour Security provide security operatives for a wide range of clients in the North West, UK and Worldwide. Security operatives have the ability to use their own initiative and solve problems that sometimes arise. Spartan 24 Hour Security started trading in 2009 and have an expanding customer base due to our high standard of service.

‘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.

Safe Apps Ltd (StaySafe) provide a lone worker safety solution for business customers and a personal safety application for the consumer market. StaySafe Business offers lone worker protection. It is a safety app that can track the location of lone workers in real-time and enable them to check-in safely after appointments, meetings and lone working sessions, whilst employers have full visibility through a secure, online hub.

Stratiis is an accredited IT company specialising in the delivery of IT Managed Services across hardware, software and infrastructure.

Strongpoint Security Limited is a small security and defense consultancy based in London.

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 has a highly skilled team of professional private investigators & security consultants providing bespoke and comprehensive advice and services, highly effective in-house training packages, crime prevention strategies, internal audits, surveillance investigations and more.

Swift & Safe Security ltd is a security services company based in Greater London and Middlesex covering every angle of needed security services that are required by the public or private sectors. Swift & Safe Security provides security for communities, special events, businesses, parties, private functions, parking, warehouses and shopping centres in London and Middlesex areas.

Established in Tunbridge Wells in 1978, Swift Alarms Supplies Ltd. is one of the UK’s largest and most successful fire and security installation and maintenance organisations. The company provides a fully integrated, nationwide installation and maintenance service to its customers across the complete spectrum of fire and security products.

With its Security Services and Alarm and Security Systems business units, the Swiss Securitas Group offers an effective set of instruments with which to address security and protection needs through constant readiness, state-of-the-art technologies and professional services. Over 10,000 employees are at the service of the Swiss Securitas Group in Switzerland, Europe and elsewhere - dedicated to the field of security.

Synergy are Ireland's largest, indigenous Security Services company, operating across the entire island, providing licensed and insured manned guarding services.

In Germany as well as in Europe, SySS GmbH is a leader in penetration testing and has gathered many years of experience in numerous successful projects. Its customers are large and medium-sized companies – many of which SySS has been supporting for several years on all matters relating to IT security.

Tamper Evidence Ltd is a company incorporated in England & Wales. Their aim is to provide an independent source of information and supply of tamper evident security seals, security labels, asset labels and complimentary products and services.

techUK represents the companies and technologies that are defining today the world that we will live in tomorrow. More than 900 companies are members of techUK. Collectively they employ approximately 700,000 people, about half of all tech sector jobs in the UK. These companies range from leading FTSE 100 companies to new innovative start-ups.

Tecnicas Competitivas provides services & product development within the framework of Information Technology & Communication (ICT), especially in the field of Health, Public Administration, as well as, Telecommunications & Safety & Emergency. These services include software development, IT system maintenance, customer relationships centre as well as the infrastructure & installation management & maintenance & supply of telecommunications.

TEW Plus is a leading independent telecommunications and security systems integrator serving the transport and commercial sectors. Formed in 2006 from a range of rail professionals, to provide valued, dedicated services to the rail sector. TEW Plus offer a full installation service including; design, project management, survey, installation, commissioning and enabling works through to maintenance.

The Real Smart Card Company supplies everything that is related to smart cards, including blank and bespoke printed smart cards. The company supplies genuine and secure access products from the leading access control brand manufacturers, such as NXP MIFARE, DESFIre along with HID, PAC, Paxton, TDSi, Cotag and Kantech, ACT, Infineon, Salto Systems, Keri Systems, EM Micro Electronics, Fudan, Bewator and many more.