O' Rourke Security Systems supply and install the latest advanced systems including intruder alarms, smoke alarms, CCTV, access control systems, gate automation etc. Based in Leitrim, the company offers high quality installations at competitive rates. O' Rourke Security System offers services to both domestic as well as commercial sectors.

Oakpark Alarms specialises in installation and maintenance of of access control, CCTV, fire alarms etc. The company offers services both commercial and domestic locations. Oakpark Alarms cover all areas of Dorset, Hampshire, Berkshire, West Sussex and Wiltshire as well as providing commercial systems over a wider area still. The company ability to certify installations resultant from their membership of the SSAIB and BAFE approval.

Oakpark Alarms Security Services Ltd specialise in the Design, Supply, Installation,Service and Maintenance of Intruder Alarms, CCTV, Door Access, Fire Alarms, Emergency Lighting, Fire Extinguishers, Fire Suppression Systems and Automated Gates, Barriers and Bollards, Perimeter Security and Fencing. Based in Winslow, the company work varies from garden sheds to Hotels.

Obsidian Security is a leading supplier and installer of electronic security systems and fire alarm systems to commercial and industrial premises and public buildings such as schools and hospitals.

Octavian Facilities Management Limited is an established, reliable, and accredited security protection firm. Over the years it has developed into a full services security & FM company.

Whether you require a full new installation of CCTV, Alarm, Fire or Access system or an upgrade or maintenance of your existing system, One Solution has the experience and expertise to provide solutions to suit your needs. From basic systems to state of the art computer accessible systems their dedicated staff will help you to fulfill your security requirements.

One Stop Alarmed Security offers an extensive range of security services provided by their team of professionally trained security officers. Their aim is to provide a service that leaves their client whether, personal, corporate or business relevant to feel 100% secure and protected.

OnFocus AI specialises in the end-to-end implementation of Artificial Intelligence (AI) across IT infrastructure. From conceptual design to full-scale development and ongoing maintenance, they empower organisations to seamlessly integrate AI technologies into their IT ecosystems. OnFocus Artificial Intelligence specialises in offering end-to-end solutions for artificial intelligence (AI) integration within networking environments.

Opem Security is a pioneer, London based, security systems provider. They specialise in delivering the design installation, monitoring, and maintenance for CCTV and access control, as well as an offering out-of-hours concierge support and facilities management.

OpenWorks Engineering is a hi-tech product company developing security and counter-terrorism products. OpenWorks has developed an award-winning and innovative drone capture and autonomous optical detection and tracking technology. The systems offer law enforcement and security forces the capability to protect the people, VIPs, secure facilities, and critical national infrastructure.

Oprema is a distributor of CCTV, access control, intrusion, fire and networking products in UK. They are a premier distributor of Dahua products in the country and have more than 50 market leading brands such as such as Advanced Electronics, Apollo, Comelit, Milestone, Morpho, PAC, Paxton, Pyronix, Samsung, HID, Vanderbilt, to name a few, as their partners.

Based in Manchester, Optimum PDM is a sales and marketing agency for electronic security and technology companies established in 2005. The company delivers customised sales and marketing services and support client's business objectives and sales targets. Optimum PDM customers include manufacturers, distributors and installers of CCTV, access control, intruder detection, fire, ANPR and EAS tagging.

Orestone Controls offers 24/7 manned protective monitoring service utilising permanent and semi-permanent CCTV and fire detection systems. They also provide door safety services, access control systems, emergency alarm systems, gate automation, fire alarm systems and many more.

Oxford Security Services Ltd is a local Security Company based in Oxford serving the whole of Oxfordshire. It offers a wide range of services from Alarm response, mobile patrols, key holding, and open and closing services. Its aim is to provide a flexible, efficient, and reliable service to meet all needs and at the same time maintain a high image for the company.

P&R Alarms Limited specialises in installing and maintaining all types of electronic security systems across Worcestershire, which includes CCTV, access control, intruder alarms, wireless systems, fire alarms etc. The company provides the best possible protection for your business, family, house, and home. P&R Alarms Limited are fully committed to providing total care to all of its customers.

P.I.P. Security Systems has been responsible for the installation and maintenance of many thousands of security systems including CCTV, intruder alarms, fire alarms, and access control etc. Based in Newtownabbey, the company provides both home as well as commercial security. P.I.P. Security Systems are proud to be a registered National Security Inspectorate (NSI) NACOSS Gold Installer with ISO 9001:2008 accreditation.

P.J. Alarms is an NSI installer with over 25 years of experience in the design and maintenance of security systems, such as CCTV, smoke alarms and access control. The company is a family run business, offering a personal service to the smallest house, and to the largest multi national clients we have already obtained. P.J. Alarms also take considerable care to advise its customers regarding the security systems they require.

P.N. Alarms specialise in the design, installation and maintenance of Intruder Alarm, CCTV & Access control systems. Based in South Yorkshire, the company offer a full range of security applications to meet the requirements of any situation. P.N. Alarms have a highly trained, and dedicated group of staff, all of whom have undergone security screening.

P&R fire and security are into installation and the maintenance of security system such as CCTV, fire alarms, intruder alarms, access control and lone worker/ panic alarms. Based in Lancashire, the company's wide-ranging and extensive customer portfolio includes both national multi-site customers and single site national customers. P&R fire and security's qualified engineers are experienced and their workmanship is second to none.

Pacific Security Systems is a family business with over 20 years of experience in the fire and security sector. They offer complete design, supply, installation, commissioning, and maintenance services, covering all safety needs. They provide fire alarms, inert gas extinguishing systems, fire extinguishers, sprinkler systems, and much more.

Panther Protection Services is a full service protection agency performing security consulting, threat assessments, risk/crisis management, executive protection, self-defense training, firearms instruction and high risk tactical protection.

Paragon Fire & Security Ltd provides a full range of security solutions and services to help customers benefit from a safe working environment, secure property and protected assets.

Founded on first class customer service and support - with decades of experience in fire and security systems for some of the world’s most demanding applications - Paragon Security is a UK-based specialist solutions provider. They support clients around the world with specialist fire and security products and services. The company is founded on customer support second-to-none, built on providing fire and security systems for diverse applications.

PAS Sound Engineering design, install and commission a wide range of commercial audio systems including voice alarm and public address. With 30 years of successful trading experience they can offer true specialist audio contracting services for buildings or projects requiring high intelligibility sound and communications. PAS Sound Engineering offer installation, rack build and commissioning with their own dedicated specialist engineers.

PEL Services along with supplying and installing new systems, also provides a range of service agreements, including routine maintenance and fully comprehensive cover, on third party equipment as well as PEL systems, throughout the UK and Eire. PEL offers single systems to complete packages of associated sound, fire, security & communication systems and services for projects of all sizes.