Sure, there is a load of sex in every Cooper novel, but it’s told quite elliptically. These are no Fifty Shades, put it that way. When she won an OBE for services to literature in 2004, there was a lot of sniggering, mainly centred on the idea of the queen reading a book that had someone’s hand down someone else’s trousers on the cover. There was also an amount of mirth around whether or not all this counted as literature. Truth be told, he has been having a tantrum since he washed the vaginal deodorant out of Helen’s privates in 1985. He is always sleeping badly, and sustaining injuries, and pretending they don’t hurt, and crusading to victory (polo) with a dislocated shoulder, and covering his pain with stoicism and more tantrums. In Cooper’s telling,this is incredibly hot and he is exactly the kind of man you want in your corner (and four-poster bed). Of course. Although mainly about dogs nowadays. I’m very romantic about animals. I feed the birds twice a day. Doves come down at midday to be fed. Nor do the rival local football team, their duplicitous chairman and their corrupt dealings make things easier – let the scandals, sabotage and seductions begin…

Yes. She’s old and grey now, like me. Her type comes up rather grey but I’ve written every book since Riders on her. She’s a star, is my Monica. Its release is eagerly awaited by her legions of devoted fans. For an author whose books are filled with snobbery, Cooper attracts surprisingly little. She's read by both men and women, adored by fellow writers including Ian Rankin, Helen Fielding and Marian Keyes and loved by Cambridge academics. When Sunak came out as a fan of Cooper's books earlier this year, he explained that "you need to have escapism in your life". Along with her new book, a big-budget adaptation of Rivals is coming soon to Disney+. I used to say that the literary world is divided into two sets: people like me who long for a kind word in the Guardian and people in the Guardian who long for my sales. Isn’t that awful? Rupert’s explosive arrival at Searston causes outrage, so the fights are as furious off the field as on – particularly when glamorous WAGS flood in to stir up trouble and lust after Rupert…

She is to humans what David Attenborough is to animals’ … Jilly Cooper at home. Photograph: Thousand Word Media/Alamy Always wear cashmere Despite being a nation with a reputation for prudishness about sex, the British don't seem to have any problem reading about it, at least not if you go by the enduring popularity of one the country's most successful writers, Jilly Cooper. Known as the Queen of the "bonkbuster" (a British term for a popular novel stuffed with salacious storylines and frequent sexual encounters), she even counts the British Prime Minister Rishi Sunak as one of her fans. For those who came of age in the UK in the 1980s or 90s, the covers of Cooper's raunchy books alone are forever imprinted on their memory, such was their ubiquity on bookshelves and sun loungers, or in schools, where they were shared like contraband by teenage girls.

The upcoming Disney+ adaptation of Rivals – starring Aidan Turner, David Tennant, Alex Hassell, Danny Dyer and Katherine Parkinson – might also pull in a whole new generation of Jilly Cooper fans. There is apparently so much sex on the show, on which Jilly is an executive producer, that Disney+ hired two intimacy coordinators for the set. In literary fiction, sex is ever present but is often used as a device to explore issues of consent, misogyny and identity. "There are a lot of sexually explicit books that feel quite dark and gritty – and my friends and I just want pure sauce!" says Buchanan. "I love the work of writers like Abby Jimenez, Akwaeke Emezi and Melanie Blake – they are great at writing sex that is fun to read, and genuinely erotic. They are upholding Jilly's legacy, and I hope I am too."When you think everyone is fantastically attractive, that helps. It’s 38 years since Rupert appeared in Riders. He is now 67, which means we met him when he was 29, although he came off more like 35. Never mind; age cannot wither him, being the handsomest man in the world. Of course, everyone biologically related to him, children and grandchildren, is outstandingly beautiful, as is his wider circle and household. It would besmirch his supremacy were he to stand next to anyone not handsome. Valent Edwards says “bluddy” because he is from Yorkshire, but how else would you pronounce “bloody”? He also says “fooking”, but what accent is that? Paris Alvaston, trying to teach public schoolboy wannabe footballers how to talk common (because “footballers resent public schoolboys”), advises that they start saying “pass” to rhyme with “gas”, by which I guess one infers that the working classes of the home counties also have to adjust their accents to play football because they are only allowed to come from Leicester. If the pressure is on for her books to be full of filth, it may be because she is the last bastion of the genre as we know it. Collins died in 2015, Krantz in 2019, and Conran hasn't published a novel since the 1990s. Cooper has said she has an idea for one more book after this, set in Sparta, the only place in ancient Greece where adultery was allowed. But will her last novel signal the death of the bonkbuster? Being loved and a job where people say “well done!”. It’s terribly trivial but it matters. I’ve always said the secret to a happy marriage is creaking bed springs – from laughter, rather than sex. It’s funny, with all this wish fulfilment (these chronicles get more and more like fairytales as they go along), to get a cold-hairdryer of medical reality. But you know how, in literary novels, no one ever has a job? It’s the same with cancer; they either get it and die or they get it and – plot twist – don’t die. None of them mention sitting on a plastic chair with a chemo drip, then their wee being mauve and their poo being like gravel. This is a useful corrective to the prevailing thinking on cancer – “stay positive”. Even if you don’t die, it’s still absolutely awful. Give entrepreneurialism a shot – it’s much easier than it looks

With the help of the club’s ravishing and adorable secretary, Tember West, and his sassy Press Officer, Dora Belvedon, he becomes increasingly fond of his riotous mix of players, despite bawling them out whenever they face defeat.Rupert dislikes football and his first impressions of Searston are distinctly unfavourable. But as their new and indelibly competitive Chairman, he won’t stand for anything less than an Everest climb to the top of the Premier League. This positive attitude to sex was a huge influence when Buchanan started writing her own novels. "My first novel, Insatiable, wouldn't exist if it wasn't for Jilly Cooper's novels," she says. "Jilly's books formed my emotional sex education, and Insatiable… owes an enormous debt to Rivals and Riders. I wanted to write escapist sex with real emotions."