As the sun set slowly on the British Empire in the years after the Second World War, the nation's stately homes were in crisis. Tottering under the weight of rising taxes and a growing sense that they had no place in twentieth-century Britain, hundreds of ancestral piles were dismantled and demolished. Perhaps even more surprising was the fact that so many of these great houses survived, as dukes and duchesses clung desperately to their ancestral seats and tenants' balls gave way to rock concerts, safari parks and day trippers. From the Rolling Stones rocking Longleat to Christine Keeler rocking Cliveden, 'Noble Ambitions' takes us on a lively tour of these crumbling halls of power, as a rakish, raffish, aristocratic Swinging London collided with traditional rural values.