O2 (Telefónica UK) is the commercial brand of Telefónica UK Limited and is a pioneer digital communications company. Services include Telecoms, Data Network, Roaming, Fixed Line, Mobile Landline, Email, and Applications.

Oak View Group are here to be a positive disruption to business as usual in the sports, live entertainment, and hospitality industries. Oak View Group has assembled a world class group of equity investors who believe in the company's bold vision for the future of sports and entertainment.

Ocean Marine Security is the market leading Maritime Security Company in Nigeria. For the last 7 years, OMS has worked in partnership with the Nigerian Navy, providing vital static asset protection to the oil and gas industry and much-needed escort services for commercial vessels transiting through Nigerian water. Ocean Marine Security's services include - armed escort and patrol services, port, facility, vessel security threat assessments etc.

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.

Ofi Equipos PC is a Mexico-based high technology and innovative solutions provider and integrator. Their solutions come from the creation of intelligent accesses, security generation, audio control, air control, power supply and more in houses, apartments and corporate buildings. They work with architects, maintenance managers, corporate companies, clients with apartments and houses, generating a diagnosis according to the client's objectives.

Ogar Consulting is a leading security, technology and wireless broadband solutions firm with global presence in more than 35 countries. Ogar Consulting draws on the knowledge and experience of 200 people, whose skills extend from the initial generation of ideas, insights, solutions and new technology, all the way through to detailed implementation.

Olarm is an exciting IoT business that provides next-generation mobile applications, systems and solutions to the home security and monitoring markets. They are a hardware & software company that has built a product from the ground up that enables people to use their smartphones to control their existing home alarm systems.

OlenCom Electronics is a player in the data & telecommunications field. The company develops, manufactures, and markets a full line of innovative cutting edge solutions for the Global telecoms market. Olencom’s headquarters, R&D center and manufacturing facilities are located in the High-Tech Industrial park of Yokneam, Israel.

Omnicloud is a Mexican company that provides and distributes specialised cloud services. OMNIVIEW stands out among these services, which they describe as a SaaS PSIM platform focused on offering integrated solutions for physical security and IoT in sectors.

OmniClouds optimises, migrates, and supports organisations away from traditional internet connectivity models to modern, cloud-based network infrastructures. They also provide Cloud Migration, Cloud Connectivity, Global & SD WAN Connectivity, Managed Security, Hybrid WAN, Application Awareness Routing, Security Monitoring and much more.

Omnitec Security Systems LLC is an ISO9001:2000 certified company which over the years established their reputation by constantly expanding their operations by offering high quality products and services in Security Solutions, Parking Management, Traffic Controls, High Speed Doors and in Gate Automation industry.

On-Line Communications, Inc. is an AVAYA certified affiliate of National Telecom Services and authorized AVAYA Business Partner. On-Line Communications provides on-site telephone installation/maintenance services and is an agent of NTS. The company also offers a broad range of services, including voice/data systems, fiber solutions, paging, video and more.

One Ring Networks has quickly grown from a regional alternative access carrier to a large Tier 2 carrier with a national backbone. Their business communications services power local organizations with a host of voice and data solutions including fixed wireless, fiber internet, 4G LTE wireless, managed IT services and hosted PBX.

One-Net Communications provide world-class communications solutions and services to various companies and businesses including the government sector.

OneID® is an organisation building trust for a safer online society. It let individuals prove who they are online easily and securely using bank-verified data, making verifying the customers hassle-free.

OneMind Technologies help clients to transform operational decisions and reveal insights through real-time and multi-domain intelligence.

OneSpan leverage identity, security, and compliance DNA as a core platform differentiator to empower enterprises to deliver the optimal level of security, world-class user experience, and human touch in digital interactions and agreements with their customers.

OneTrust is the fastest-growing company on Inc. 500 and the category-defining enterprise platform to operationalise trust. Their offerings include OneTrust Privacy Management Software, OneTrust DataDiscovery™ AI-powered discovery and classification, OneTrust DataGovernance™ data intelligence software and much more.

OneWeb is a global communications network powered from space, headquartered in London, enabling connectivity for governments, businesses, and communities. It is implementing a constellation of Low Earth Orbit satellites with a global network of gateway stations and a range of user terminals to provide an affordable, fast, high-bandwidth and low-latency communications service, connected to the IoT future and a pathway to 5G.

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.

Onyx Electrotech is a leading firm for distributing electronic security devices like CCTV, Networking equipment, EPABX, etc.!

Ooperon is specialises in developing, installing, and integrating personal security systems as well as security alarm and communication systems. The company primarily caters to judicial and healthcare institutions.

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.

OpsRamp is a modern SaaS platform company that’s just entered its next stage of growth with new investments from Morgan Stanley, HPE and Sapphire Ventures.