List of prime ministers of the United Kingdom

Historians generally consider Robert Walpole, who led the government of the Kingdom of Great Britain for over twenty years from 1721,[5] to be the first prime minister.

[6] The first prime minister of the United Kingdom of Great Britain and Ireland was William Pitt the Younger at its creation on 1 January 1801.

[7] The first to use the title in an official act was Benjamin Disraeli who signed the 1878 Treaty of Berlin as "Prime Minister of Her Britannic Majesty".

[23] The prime minister still holds the office of first lord by constitutional convention,[24] the only exceptions being the Earl of Chatham and the Marquess of Salisbury.

[100] Bath was invited to form a ministry by George II when Henry Pelham resigned in 1746,[101] as was Waldegrave in 1757 after the dismissal of William Pitt the Elder,[102] who dominated the affairs of government during the Seven Years' War.