1979. Clarence House, London. The Queen Mother's receptions are in full swing and the champagne is flowing. Guiding the proceedings is William 'Billy' Tallon, page of the backstairs, keeper of the keys, holder of the royal corgis - and the royal secrets.

Outside the palace walls, unemployment, inflation and industrial action are bringing Britain to its knees, and the country is on the verge of changing seismically under Prime Minister Margaret Thatcher. These two worlds are about to collide, with dizzying consequences for everyone...

Backstairs Billy examines the fifty-year relationship between the Queen Mother and her most loyal, most outrageous servant, who joined her household at the age of fifteen. Marcelo Dos Santos's irreverent comedy was first produced by the Michael Grandage Company at the Duke of York's Theatre, London, in 2023, directed by Grandage and starring Penelope Wilton and Luke Evans.