Hanwha Vision Europe (formerly Hanwha Techwin Europe) has been leading the global video surveillance industry with world-class optical design, image processing and cybersecurity technologies for more than 30 years. As it broadens its business to become a global vision solution provider, Hanwha Vision will deliver more valuable and meaningful insights to customers by collecting key information and providing big data analytics.

Haredata Electronics was established in 1984 and started manufacturing linear power supplies and chargers to their own design. Soon after, in 1986, they complimented their products by becoming the sole UK agents for FRIWO Geratebau GmbH, one of the world’s leading manufacturers of low voltage external power supplies & battery chargers.

Based in Northern Ireland, H.E.S. Alarms is a privately owned firm engaged in the installation and maintenance of domestic, industrial and commercial Intruder Alarm systems. The company is approved to the standards of 'BS EN ISO 9001:2008' and 'Quality Schedule SSQS 101 for the Installation and Maintenance of Electronic Security Systems including: Access Control, CCTV Systems and Intruder Alarms, and Fire Alarms.

Harper Security Systems has a long-standing reputation as master craftsmen with experience in all types of security systems. Their specialised team undertakes work where they are needed.

Harris & Sandford Security specialise in the installation of effective home and commercial intruder alarms, closed circuit television, access control, fire alarms, personal emergency systems and much more. Located in Kent, the company's main objective has been to install and maintain high quality security installations. Harris & Sandford Security systems comply with the very latest European standards.

Founded in 1982, Harrison Locks offers alarm, access control and master key systems. Harrison Locks supply and fit a range of Codelocks Paxton keypads and keyfob systems. The company's access system is Corkey, which is a global access system and Harrison Locks are one of Corkey’s main 4 UK dealers

Harvey Group’s core business is the design, development, installation, commissioning and maintenance of Mechanical and Electrical Building Services. Harvey Group provides servicing and maintenance for; Intruder alarm systems, Alarm monitoring, CCTV systems, Door access system, Roller shutter doors, barriers, fire alarm systems and much more.

Haven Fire Security Consultants offers full industry package of scheme design, supply, installation, commissioning and maintenance of security systems such as Intruder Systems, Gas Extinguishing, Emergency Lighting, Nurse Call, CCTV, Fire Extinguishing and Water Detection systems etc. Located in Wiltshire, the company has grown from these firmly established roots to be the largest fire alarm service company in the South.

Haven Security Ltd. designs, installs, update and maintain various security systems for commercial and domestic application. The company is a member of the National Security Inspectorate. Located in East Sussex, Haven Security Ltd. have over 25 years' experience in installing burglar alarms, remote monitoring, access control systems, and fire alarms etc.

Based in Stanford-le-Hope, Hawkwell Alarms work throughout Essex and London, providing homeowners and commercial businesses with the very best in alarm and security system installations. The company's extensive range of alarm system services includes Wireless alarm systems, CCTV, System monitoring, access control, fire detection, and security lighting. Hawkwell Alarms have achieved accreditation from NSI NACOSS Gold Approved.

Haydon Marketing have been manufacturing and distributing CCTV security products since 1993. Their product range includes CCTV Camera housings with accessories, Surge protected UTP active and passive products, DVR enclosures, Data protection equipment for digital CD/DVD systems, CCTV signage, Dummy cameras and accessories.

HB Litherland are UK wholesale & trade electronics suppliers and distributors based in Blackpool, supplying AV, CCTV, Pro Audio & PA, & LED, LCD.

Established in 2011, HD Integrated Systems is based Sutton, Surrey. The company offers clients comprehensive electronic security solutions incorporating state-of-the-art CCTV, access control, intruder and perimeter Detection systems.

Heliguy is a drone company based in UK that provides a one-stop-shop for commercial operators across a range of industry verticals, including public safety, mining, agriculture, construction, inspections and media.

Helimedia is a specialist delivering Intelligence, Surveillance and Reconnaissance (ISR) equipment and consultancy in the military, public safety and security sectors. The company focuses on airborne surveillance and microwave communications systems as well as other core technologies such as Automatic Number Plate Recognition (ANPR), biometrics and mobile data applications for PDA’s.

Heras designs, manufactures, installs and services perimeter protection solutions for customers across business, community and industry sectors.

Herts CCTV Ltd is a UK based installer of CCTV, access control, alarms, automated gates, security lighting for industrial, commercial, and domestic purposes

HESIS are specialists in the design, installation, commissioning, maintenance, and emergency response for all types of life safety and security systems across the United Kingdom. HESIS are market leaders across all business sectors, and have an enviable and proven record which is delivered by a professional business team who fully support all clients by providing the very best levels of service possible.

Heston Apex Europe Ltd. have installed a wide range of systems ranging in complexity from a single camera to multiplexed systems with digital recording. The company have installed systems throughout Europe, linking CCTV back to Control Rooms in the UK. Heston Apex Europe installs fire protection, IP CCTV, physical security, and access control etc. The company also provide maintenance service which can be tailored to meet individual client needs.

Heston Apex Ltd has specialised in the design, supply, installation and maintenance of fire detection, extinguishing systems, intruder alarms, CCTV, door entry, access control, asset tagging, audio visual systems, nurse & warden call systems and related support services. The company is NSI Gold Approved for the installation of intruder alarms for both commercial customers and consulting engineers.

Hewes Security is a privately owned company that installs security systems for the corporate, small business and domestic environments and are approved by the National Security Inspectorate. The company's security services includes products like intruder alarms, fire security, CCTV, physical security etc. Located in Essex, Hewes Security maintains their high standards to this day.

Hidden Technology Systems International Ltd. is a long-standing developer and manufacturer of highly advanced tracking equipment. With over a decade of experience and offices internationally, Hidden Technology are a truly global presence in the field of tracking technology. In 2012, the company was awarded the Queen’s Award for Enterprise: International Trade; the highest honour a British company can receive.

Highgrade Fire & Security is a service provider company. The company installs, maintains, services as well as upgrades existing security systems. Highgrade Fire & Security offers wide range of products including fire alarms, intruder alarms, CCTV, access control, emergency lights, networking solutions, fire extinguishers, etc. from leading manufacturers like Pelco, Axis, Hikvision, Bosch, Kentec, Honeywell, Hochiki, Texecom, & more.

In Europe and across the world, Hitachi has provided products, services, and solutions like railway systems surveillance systems (cctv), commercial and industrial air conditioning systems, power production plants and equipment, broadcast and professional video cameras, data storage solutions, finger vein authentication solutions, chassis camera, industrial video cameras, etc.

HN Storey specialises in supplying & installing security systems and multimedia/audio visual equipment in both homes & businesses across the North East UK. They provide security systems, CCTVs, door entry systems, access control systems, IPTV and video surveillance systems for homes and corporate security applications.

Hoffman Security plc is now a part of MRFS Group that offers consultation, design, supply, installation and maintenance for Audio Visual, Fire & Security Systems within the residential, commercial and industrial sectors. Located in Surrey, the company focus on its Customers whilst providing first class integrated Audio Visual, Fire and Security solutions. Hoffman Security plc are NSI Gold installers and also are BAFE certified.