William Gladstone, four-time PM

"Gladstone became prime minister at 82, and not as a figurehead. That is the Gladstone who has inspired me." Trevor Lyttleton.

Born in 1809, William Gladstone's political life straddled the century - he moved from the tories to the liberal party, was Chancellor of the exchequer and became Prime Minister an unequalled four times. Queen Victoria didn't like him, but campaigner Trevor Lyttleton sees him as a champion for the amazing abilities of older people everywhere. Trevor is the founder of Re-Engage, a long running charity which aims to conquer loneliness among the elderley.

Joining Trevor and Matthew Parris in studio is Dr Ruth Windscheffel from York St John University.