Lord O'Donnell, Cabinet Secretary from 2005 - 2011, is here interviewed by Lord Hennessy.
Most of the works of art at 10 Downing Street are from the Government Art Collection, with its remit to promote British art, culture and history in major Government buildings in the UK and around the world.
Archive footage of past UK Prime Ministers. Discover more on the history pages of the Downing Street website: http://www.number10.gov.uk/history-and-tour/