And she certainly played her part in transforming Mustique, bought as a mosquito-ridden wasteland by her husband in the 1950s, into the ghetto for the rich and titled it is today. Not entirely a surprise: her mother, the Countess of Leicester, sent her out as a travelling saleswoman for her pottery in the UK and the USA. More books are to follow there’s talk of a film and, before the coronavirus lockdown, she had been gracing the better kind of provincial theatre with An Evening with Lady Glenconner. Her friend Rupert Everett had advised her on how to approach Norton’s chat show: ‘ Do it, Anne.’ And, she notes, ‘Olivia lives in Norfolk’, so she knew people would be on her side but it wasn’t until Chadwick Boseman, the star of Black Panther, came up to her afterwards, shook his head and said, ‘Gee whizz, lady!’ that she knew ‘I had done OK.’ More than OK: she’d become hot property. The title went to a cousin living in South Africa.) (It might be argued that Lady Anne had married beneath her: Tennant, the eldest son and heir of the 2nd Baron Glenconner, was merely an Hon, whereas Lady Anne – née Coke – was the eldest of the three daughters of the 5th Earl of Leicester, robbed of the title and of Holkham Hall, the glorious Palladian house she was brought up in, by primogeniture.

They asked the still-virginal Lady Anne if she wanted to join in.

Bonham Carter – who is her cousin by marriage – was a fellow guest when Lady Anne triumphed on The Graham Norton Show, drawing amazed gasps and whoops of laughter as she told the audience how her mother’s attempts at sex education revolved around her dog, Biscuit: ‘You remember Daddy’s labrador getting on top of Biscuit? Well, that’s what happens when you get married and have sex, except you’ll probably be lying down in a bed.’ She topped that with an account of Colin Tennant, her exuberant, frightening, half-crazed maverick multimillionaire of a husband, taking her, during their honeymoon, to watch a couple having sex in a seedy hotel room.

Lady anne lady in waiting