Author and historian Professor Kate Williams visits Hughenden, the Buckinghamshire house transformed by Victorian prime minister Benjamin Disraeli.
Historian Dr Philip Salmon tours Knowsley Hall, ancestral home of the 14th Earl of Derby, who was three times prime minister in the Victorian era.
BBC Wales journalist Elliw Gwawr visits Highgate Cottage in Llanystumdwy, the childhood home of First World War premier David Lloyd George.
The first Duke of Wellington, victor at the Battle of Waterloo, was a military hero who served twice as prime minister. Carolyn Quinn meets the current duke for a tour of the family's London home, Apsley House.
Ellie Price visits the London home of Liberal Prime Minister HH Asquith – now the headquarters of the Royal College of Nursing.
Historian Dr Philip Salmond tours the site of Conservative PM Sir Robert Peel's old home – now Drayton Manor theme park.
Party historian Lord Lexden visits Astley Hall, home to the Conservative leader who was three times prime minister.
David Cornock tells the story of how Toynbee Hall and London's East End shaped the politics of Labour prime minister Clement Attlee.
Conservative party historian Lord Lexden charts the career of Andrew Bonar Law from his birth in Canada to Downing Street, via Pembroke Lodge in Kensington.
