Grosvenor has an outstanding reputation for the installation, maintenance, and servicing of a wide range of security systems such as CCTV, intruder alarms, and access control. Located in Wrexham, the company's installation engineers receive specialist training in the latest safety ensuring that all installation work is carried out with the greatest efficiency, to the highest standard, and with the least amount of disruption to residents.

GTS Solutions CIC (GTS) is a community interest company (CIC) and a leading provider of socially responsible security services in the United Kingdom. Established with a mission to foster social impact through sustainable employment, training, and technology-led solutions.

Guard it camguards manufacture security cages for CCTV cameras, PIR Detectors, lighting, etc. They also make and supply cages of any size and colour required.

Guardall Security Systems (UK) is a family-run security company established in 2001 that specialises in installing and maintaining intruder alarms, high-definition CCTV systems and access control solutions for residential and commercial clients, with SSAIB, police and insurance approvals.

Guardian Alarms Ltd. install and maintain security systems including wireless burglar alarms, CCTV, and access control systems etc. Based in Surrey, the company provides services to residential and commercial properties. Guardian Alarms Ltd. Guardian Alarms Ltd. is accredited by the National Security Inspectorate (NSI) and all the alarm systems are installed to NSI Gold standards and issued with a NACOSS Gold certificate.

Guardian Security & Fire. is accredited to the highest industry standard and specialize in the installation and maintenance of electronic security and fire systems. The company offers a wide range of solutions covering Fire Alarms, Intruder Alarms, Access control and a diverse range of CCTV solutions. Guardian Security & Fire confirms its status as a premium supplier and reflects the quality and reliability of our staff and processes.

Guardian Security & Fire Ltd has been installing alarm, access control and CCTV systems in Kent since 1987. NACOSS Approved.

Guardian Security SW Ltd provides professional security solutions across the South West and the UK from head office in Exeter, Devon. The company specializes in Salto access control, CCTV, architectural ironmongery, fire alarms, emergency lighting, safes and safe moving, fire extinguishers, gate & barrier automation, security roller shutters, keys, key cutting & master key suites & locks, locksmiths, emergency lighting, and ANPR.

Guardright supplies comprehensive, professional and accountable security services. The company provides an extensive range of high quality security guard services such as mobile patrols, keyholding and alarm response services, manned guarding, industrial security guards and event stewarding.

Guide Security Services is the integrated security and remote monitoring solution provider in the UK. GSS specializes in design, installation, maintenance and ongoing monitoring of security and video surveillance solutions across multiple industries and service sectors, including: retail, business sector, residential and remote monitoring etc.

Guld Security is a national whole-service security firm. They work within the private sector as well as servicing public sector security contracts.

The Gunnebo Security Group is a provider of security products, services and solutions including cash handling, safes & vaults, entrance control, electronic security, access control, service & maintenance.

H264 Ltd designs, develops, builds and distributes the REVADER range of security products and systems.