Lords Commissioners of the Treasury concomitant, so much so that the Prime Minister's official residence, 10 Downing Street, is in fact the official residence of the First Lord of the Treasury, which title is named on the letter box. Salisbury, as a marquess of vast independent wealth, had no use of an official residence, instead living in his grander town house at 20 Arlington Street in St James's, and could instead bestow it as a perquisite to other ministers, along with the First Lordship itself. Other positions have been linked to the Prime Ministership as well. Continuously since 1968, when the position was created by
Lords Commissioners of the Treasury with the decline of defence as an urgent policy area this was abandoned by Sir Anthony Eden when he came to office in 1955. Accordingly, the First Lord of the Treasury is the title most associated with the Prime Ministership. Indeed fully seven Prime Ministers saw fit to occupy the post of First Lord of the Treasury only, and held no other subsidiary office. Those Prime Ministers were Lord Rockingham (1782), Lord Portland (1807-1809), David Lloyd-George (1916-1922), Eden (1955-57), Harold Macmillan (1957-1963), Sir Alec Douglas-Home (1963-1964), and Harold Wilson (1964-1968, at which point he also became Minister for the Civil