The day of the opening came around, and Leith joined the end of a very long line of dignitaries waiting to shake hands with the royal. ‘Poor woman must have been gasping for a cup of tea,’ she recalled, ‘She’d just toured around this building for two hours.’
Studied up, with silver tray at the ready, Leith waited until Queen Elizabeth made her approach. ‘Black or white, ma’am?’ she asked. ‘Black, please,’ came the royal response. Very good. Prue then picked up a cocktail…

