Mary Rose 07 Turning excavated hull by 60 degrees into its proper upright position in dry dock. 19 December 1984
Messel-Rosse Collection of Fans Acquisition of the Messel-Rosse Fan collection, which was created by Colonel Leonard Messel, and was 19 December 1984
Luton Guild Book Acquisition of an illuminated manuscript of 130 vellum leaves, the official copy of the membershi 23 May 1984
Lifeboat Carriage and Two Lifeboats Repair and restoration of a rare horse-drawn lifeboat carriage and two ex-lifeboats. 27 June 1984
Lockton High Moor Acquisition of 910 acres of Lockton Moor for management as a nature reserve. 21 November 1984
Lower Treginnis Farm Acquisition of Lower Treginnis Farm, the most westerly point of the Welsh coastline, commanding view 21 March 1984
Loch Gruinart, Islay 1 Acquisition of 1,293 acres around the foreshore of Loch Gruinart, which is famous for the large numb 31 July 1984
Lamentation over the Dead Christ by William Dyce Acquisition at auction of painting, Lamentation over the Dead Christ, by the Aberdeen-born painter W 23 May 1984