Triangle Fire Systems design, supply and install fire sprinkler systems in accordance with BS 9251 and BS EN 12845 regulations. They are specialists in the design, supply, installation and maintenance of fire sprinklers in high rise buildings, residential care homes and all domestic dwellings.

Established in 1995 and based in Canterbury, Kent, Triangle Integrated is an independent specialists in the design, supply, installation and servicing of a range of fire detection systems and associated products in the south-east of the UK and beyond.

TRIFIRE is a specialized company which develops and produces fire training equipment. The company offers fire training equipment that simulates all relevant fire situations efficiently and realistically, can be used in populated and confined areas under the strictest environmental standards, and is easy to use and safe for both instructors and trainees.

Trigion Security Services is a renowned UK provider of security guarding, electronic security systems and technical solutions. They also offer warden services, receptionists, FOH/concierge, manned guarding, People+, and Technology+ solutions.

Since 1997, Trinity Fire & Security has been helping businesses to ensure the safety of their people, properties and business operations. With extensive knowledge of fire, life safety and security systems, Trinity Fire designs a tailored solution to meet each client's individual needs.

Triple Star Fire & Security is an independently third party accredited specialist fire protection and security systems provider. They provide 24/7 fire prevention and protection solutions, including fire detection and alarm systems, fire extinguishers, fire alarm monitoring and risk assessment.

TSI Incorporated serves a global market by investigating, identifying and solving measurement problems. As an industry leader in the design and production of precision measurement instruments, TSI partners with research institutions and customers around the world to set the standard for measurements relating to aerosol science, air flow, indoor air quality, fluid dynamics and biohazard detection.

Headquartered in Fort Worth, Texas, TTI, Inc., a Berkshire Hathaway company, is a specialty distributor of passive, interconnect and discrete components. TTI’s extensive product line and supply chain solutions have made the company the distributor of choice for industrial, military, aerospace and consumer electronic manufacturers worldwide.

u-blox s a global technology leader in positioning and wireless communication in automotive, industrial, and consumer markets. Their smart and reliable solutions, services and products let people, vehicles, and machines determine their precise position and communicate wirelessly over cellular and short range networks.

U.S. Coupling is a specialist company in the design and manufacture of fittings and connections for lay-flat hose up to 12"​ in diameter and serves the municipal & industrial fire fighting, agriculture, and industrial water transfer markets. The company's product portfolio includes Storz couplings, mounting plates, adapters, elbows, valves, etc.

UK Connect is the UK’s leading communications provider to the construction industry. With their unrivaled technology, they provide solutions, tools and applications to improve the way everyone communicates, collaborates and works.

The UK Fire Association was formed primarily to serve the interests of small and medium-sized fire equipment maintenance companies and their customers. It represents over 200 small and medium-sized companies providing fire prevention and protection services, solutions, and training.

Following the Regulatory Reform (Fire Safety) Order, 2005, they established UK Fire Safety Solutions Ltd to undertake fire risk assessments and fire training. The company has now grown and is able to offer a full suit of workplace safety courses such as , fire awareness , fire warden, first aid at work, emergency first Aid, refresher courses, workplace manual handling.

UK Fire Stoppers provide quality third party accredited fire stopping to commercial buildings across all sectors throughout the United Kingdom. They are dedicated to delivering professional fire barrier services penetration sealing and fire barrier solutions for cavity barrier sealing services.

UKRI is a non-departmental public body sponsored by the Department for Business, Energy and Industrial Strategy (BEIS). The organization brings together the seven disciplinary research councils, Research England, which is responsible for supporting research and knowledge exchange at higher education institutions in England, and the UK’s innovation agency, Innovate UK.

UK Sprinklers Limited is a British company, based in Bury, Lancashire, that designs, supplies, installs, tests, commissions and services of all types of residential and domestic fire sprinklers throughout the UK region.

UL builds trust in the safety, security and sustainability of products, organizations and supply chains, enabling enterprises and individuals to make smarter choices. Their robust suite of offerings includes testing, inspection, auditing, certification, marketing claim verification, training, advisory services and software solutions.