Sir William George Granville Venables Vernon Harcourt, was a British lawyer, journalist and Liberal statesman. He served as Member of Parliament for Oxford, Derby then West Monmouthshire and held the offices of Home Secretary and Chancellor of the Exchequer under William Ewart Gladstone before becoming Leader of the Opposition. A talented speaker in parliament, he was sometimes regarded as aloof and possessing only an intellectual involvement in his causes. He failed to engender much emotional response in the public and became only a reluctant and disillusioned leader of his party.

The Liberal Party was one of the two major political parties in the United Kingdom, along with the Conservative Party, in the 19th and early 20th centuries. Beginning as an alliance of Whigs, free trade-supporting Peelites, and reformist Radicals in the 1850s, by the end of the 19th century, it had formed four governments under William Gladstone. Despite being divided over the issue of Irish Home Rule, the party returned to government in 1905 and won a landslide victory in the 1906 general election.