Which is Britain's only Prime Ministerial Library?

Gladstone's Library, known until 2010 as St Deiniol's Library is a residential library in Hawarden, Flintshire, Wales. It is a Grade I listed building. Gladstone's Library is Britain's only Prime Ministerial Library and the national memorial to the Victorian statesman, and four times Prime Minister, William Ewart Gladstone (1809–98). It is home to a collection of more than 250,000 printed items, including theological, historical, cultural and political materials.

The library was founded by William Gladstone in 1894. He was eager to share his personal library with others, especially those who faced financial constraint. He would allow bright children and young adults of the village of Hawarden to use his collection. His desire, his daughter Mary Gladstone said, was to "bring together books who had no readers with readers who had no books".

In 1895, at the age of 85, William Gladstone gave £40,000 and much of his own library. Armed with only his valet and one of his daughters, William Gladstone wheeled 32,000 books three quarters of a mile between his home at Hawarden Castle and the library.