The TalkTalk Group provides telecommunication, paid television, internet access and mobile network services to customers and business in the UK. The company also develops software for call screening, Wi-Fi network security and cybersecurity concerns such as viruses, phishing and banking fraud.

Established in 1985, Tamar Security has over 25 years experience in installing and maintaining within the security industry. Tamar Security is a family run business offering bespoke security solutions for domestic, commercial and industrial clients throughout the South West.

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.

Tangent Link is a specialist UK based conference & exhibition organizer with a significant international presence. The company delivers quality, highly researched & topical aerospace & defense events that draw influential key decision makers from the local & regional marketplaces. Tangent Link helps connect aerospace & defense businesses to international markets.

Tate Security Technology Ltd. provides all the traditional disciplines of CCTV systems, design and control panel manufacture. The company offers a number of specialist products and services specifically designed for security establishments such as prisons, secure hospitals, immigration detention centers and ministry of defense establishments.

Tatry Group provides Cleaning and Security services to help organizations create a productive and welcoming environment. They currently have more than 120 front-line staff and a highly experienced management team with in-depth knowledge of the cleaning and security service industries.

Tavcom Training provides online and classroom based security systems training courses. The company's courses include CCTV installation, design and maintenance, Intruder Alarm installation, Access Control, Fire Alarms, IP Networking, and Electro Technical. Based in Hampshire, Tavcom offers a comprehensive service for international clientele.

Taybell Alarms Ltd supplies, installs and maintains conventional fire alarms, twin wire fire alarm systems, addressable and radio (or wireless) fire alarms throughout Leeds.

Taylor Technology Systems Limited is a company based in UK that provides products and services for the security industry.

TDN has a long-standing history as a marketer of specialty products in the Holographic Industry. The company has taken a leadership role in providing technology solutions which enables customers to authenticate products and documents. It offers Holographic security and brand authentication solutions.

TDSi is one of the UK's leading manufacturers of integrated access control systems, offering an extensive range of readers, controllers and software systems. Since the formation of TDSi 35 years ago, TDSi has successfully supplied systems through its partner network across the world, with several million card holders benefitting from TDSi access control systems each and every day.

Team ITG are transforming the way global brands do marketing through their innovative, end-to-end services. They put collaboration at the heart of everything they do, working with their amazing roster of world-renowned clients to simplify the complicated, automate the tedious, and create the beautiful.

techmesh is the Information Technology & Telecommunication business to business network for Yorkshire and the Humber.

TechNative aims to offer the latest product and user news, in-depth features, reports, and podcast & video interviews with the leaders in business technology – providing technology stakeholders with the information to support innovation and growth in the digital business landscape.

Technetix was incorporated in March 1990 by CEO Paul Broadhurst and initially focused on both cable and satellite television equipment. Technetix expanded its activities for the headend, access network and in-home environments. All Technetix products are certified to the international quality management standard ISO 9001:2008.

Established in 1984, Technica Systems Ltd. installation ranges from basic audible systems to intricate high security remote signaling installations. The company is a principal member of BSIA since 1995. Decades of security industry experience give the company the edge necessary to assess any project for vulnerability to criminal intrusion. The company serves medical practices and sporting clubs as well as large corporations.

Technical Services (Shropshire) Ltd. is a family-run company, based in Shrewsbury. They specialize in the sale, installation, or hire of CCTV, public address, sound systems, radio communications equipment, induction loops, access control, and data networking. They sell and install or hire and install their equipment, and are best known for their competitive event hire rates.

Techniphone International was founded in 1967 in Bilbao an industrial city in the Basque country of northern Spain. Techniphone is involved in manufacturing medium duty electric lock releases & door entry systems.

Technistore Ltd., located in Hudderfield, United Kingdom, operates in the non-specialized wholesale trade industry. Technistore is involved in making access control products which are ISO9002 accredited.

Technocover Limited specializes in physical protection of assets within the CNI sectors. The companies high security products include access products includes access doors, including the Sentinel UltraSecure fire door range, covers, cabinets/kiosks and enclosures, walk-in modular buildings, mesh cages, partitions and panels and window bar sets.

Technology Solutions UK Ltd (TSL) specializes in the design, development and manufacture of radio frequency identification (RFID) readers and other multi-technology, mobile device peripherals used to identify and track products, assets, data or personnel.