Her Majesty's Naval Base (HMNB) Devonport (formerly HMS Drake), is one of three operating bases in the United Kingdom for the Royal Navy (the others being HMNB Clyde and HMNB Portsmouth).
However, Marine Services was put out to commercial tender by the Ministry of Defence Warship Support Agency (now part of the Defence Equipment and Support organisation) and since 1996 tugs, lifting craft, various tenders and management of HMNB Devonport, Portsmouth and Clyde have been operated and provided by Serco Denholm.
The Singapore Naval Base (as Her/His Majesty's Naval Base (HMNB) Singapore or HMS Sembawang), situated in Sembawang at the northern tip of Singapore, was a Royal Navy Shore establishment as well as being a cornerstone of British Defence policy (the Singapore strategy) in the Far East between the World Wars.