
Sir Winston Churchill opening the door of Queen Elizabeth’s car, as she and the Duke of Edinburgh leave after dining with him and other guests in April 1955 (PA Wire/PA Images)
(Picture: PA Wire)She was a mentor to a record 15 prime ministers — and never breathed a word about the secrets that they divulged to her.
From Winston Churchill to Liz Truss, successive premiers valued the counsel of a stateswoman whose decades of experience were unmatched in the world.