Author whose Shopaholic series of romcom novels were global bestsellers and adapted into a Hollywood film

Sophie Kinsella, who has died of a brain tumour aged 55, was one of Britain’s most successful novelists, selling more than 50 million copies of her books, including the globally successful Shopaholic series. Through three decades she retained a loyal and passionate readership with her deceptively light and intricately plotted comic novels.

Like her best-known heroine, Becky Bloomwood, Kinsella began her writing career in financial journalism, but, realising she was uninspired (and probably not very good at it), she wrote a book, The Tennis Party, that was published in 1995, when she was 25, under her given name, Madeleine Wickham (“Maddy”). This was followed by five subsequent standalone “Aga sagas”, which all achieved moderate chart success and critical acclaim.