(). In 1993 the Greenwich and Lewisham (London Borough Boundaries) Order transferred the site from the London Borough of Greenwich to the London Borough of Lewisham. Archaeology Most of the Tudor, Stuart, Georgian and Victorian structures above ground level that had survived until 1955 have since been destroyed. One structure that escaped the demolition is Olympia Warehouse, a unique cast-iron building constructed in the 1840s. However, archaeological surveys carried out by CgMs and Pre-Construct Archaeology in 2000 by Duncan Hawkins, in 2000 by Jon Lowe and in 2001 by David Divers, established that by far the greater part of the dockyard survives as buried structures filled in intact between 1869 and 1950. The structures of the yard proper, the docks, slips, basins, mast ponds, landing places and stairs, constitute a substantial architectural fabric that is currently extant, though largely invisible, being covered by superficial accretion or infill. As yet there has been no archaeological investigation of the garden area of Sayes Court, and only limited trial trenching of part of the manor house. International recognition In October 2013 Deptford Dockyard and Sayes Court garden were added to the World Monuments Fund's 2014 watch list. Sayes Court The War Department hired the Sayes Court area and almshouses, from the City of London Corporation from 19 September 1914 to use as a Horse Transport Reserve Depot at a rental of £90 per annum (), to enlarge its Supply Reserve Depot at the Foreign Cattle Market. The fee simple of the Foreign Cattle Market and of the Sayes Court property were purchased by the War Department, for £400,500 (), under deeds dated 25 March 1926, 18 March 1927 and 25 July 1927 including the railway, tramway, wharfage and jetty rights and easements. Dockyard railways From 15 December 1900 there was tramway access via Grove Street, to the Foreign Cattle Market, using their own Maudslay petrol locomotive. When the docks became an army depot the junction was relaid to standard gauge for direct connection to the LB&SCR. There was as well, an internal narrow-gauge tramway system. When the War Department took over, they introduced steam locomotives to work the tramways, purchasing between 1915 and 1917, twelve oil-fired Warril type gauge locomotives from the Hunslet Engine Company. In December 1920 the Government announced the sale of the equipment from the railway at the Deptford Meat Depot. In 1921 Sir Robert Walker purchased three locos and