Lutyens sketches for the Cenotaph, Whitehall Acquisition of five drawings in pencil, colour pencil, ink on paper, various dimensions, and a draft 23 April 1990
Linnell Armchairs from Badminton House Acquisition of two armchairs, japanned black and gilt, from a set of eight designed by William and J 21 November 1990
Last Judgement Plaque by Weston Acquisition at auction of a marble plaque depicting the Last Judgement which originally formed part 24 October 1990
Knowstone Inner and Outer Moors, Devon Acquisition of Knowstone Moors comprising 18 acres (72ha) of culm grassland, adjacent to the Trust's 21 November 1990
Junin Diesel Locomotive Acquisition, from Chile, of a diesel locomotive built by Messrs Hudswell Clarke in Leeds in 1930 for 25 July 1990
Killhope Wheel Restoration Restoration of an overshot iron waterwheel, 33.5ft in diameter, made by W G Armstrong & Co of Ne 26 September 1990
King's Clock by Chambers and Boulton Acquisition of clock case made by Matthew Boulton's factory in Soho in 1771 for King George III to a 26 September 1990
Horatio Walpole Papers Acquisition of the correspondence and papers of Horatio Walpole, 1st Baron Walpole of Wolverton (167 23 April 1990
Greenlee Lough, Northumberland Acquisition of Greenlee Lough, which is included in the Roman Wall Loughs SSSI. 25 July 1990
Hanson Library of Maritime Books and Atlases Acquisition of a comprehensive library of British and foreign books on the history of shipbuilding a 25 July 1990