provision of visitor and security services at the Royal Hospital Chelsea (RHC) For The Period 1 December 2015 to 30 November 2020, with options to extend to 30 November 2022. the RHC requires all aspects of visitor and security services, including, but not limited to, reception, static gate manning, patrols, event security, alarm monitoring and response, to be undertaken in support of the daily operations at a 66 acre heritage site in London on a 24/7 365 day basis.