First Lord of the Treasury

United Kingdom First Lord of the Treasury
Royal Arms of His Majesty's Government
Flag of the United Kingdom
Incumbent Andy Burnham since 20 July 2026
Residence	10 Downing Street
Seat	Westminster
Appointer	The King appoints ex officio the prime minister
Term length	At His Majesty's pleasure
Formation	1126 (as Lord High Treasurer) 1612 (as First Lord of the Commission of the Treasury) 1714 (commission permanent since resignation of the 1st Duke of Shrewsbury)
First holder	Nigel (bishop of Ely) (as Lord High Treasurer) 1st Earl of Northampton (as First Lord of the Commission) 1st Earl of Halifax (when the commission became permanent)
Deputy	Second Lord of the Treasury
Website	Gov.uk

The First Lord of the Treasury is the head of the commission exercising the ancient office of Lord High Treasurer in the United Kingdom, and is by convention also the prime minister. This office is not equivalent to the usual position of the "treasurer" in other governments; the closer equivalent of a treasurer in the United Kingdom is chancellor of the exchequer, who is the second lord of the Treasury.