The Scope of Work is to establish a Single Supplier Framework for the Provision of Survey and Design, Installation and Maintenance and Remote Monitoring of Security Systems including existing systems within the GNI network. The Contracting Entity asset portfolio are located throughout the Republic of Ireland, Northern Ireland, Scotland and the Isle of Man and therefore the successful tenderer must have the capability to deliver the suite of services required to all locations within the portfolio. Site security system requirements will vary from simple building intruder detection systems to complex integrated solution with intruder detection, CCTV, access control and other security related systems. The Contracting Entity security system strategy is to take advantage of the integration of systems, both at a site level and including interconnections between sites to realise opportunities for an improved control environment, operating efficiencies and cost savings.