GRANDMOTHER Sarah Darling claims that she has written the West Country’s answer to erotic novel 50 Shades of Grey.

The divorcee, of Sandal-wood Road, Westbury, will be holding a book readingin the town next week to celebrate the publication of her debut novel, Pure Filth: The diary of a 40-year-old married woman.

It was published on October 14, after it was picked up by Amazon as a Kindle eBook.

The book, which features a picture of Miss Darling on the cover, is the first in a series of three planned novels that follows the story of a married woman and sex therapist called Sarah. Her heroine, frustrated by a lack of interest from her husband, embarks on a series of sexual encounters.

Miss Darling, who has six children and six grandchildren, said: “I tried for years to get it published, but it wasn’t until 50 Shades of Grey came along that the market opened up. I’m absolutely delighted with the way it has been received so far and it’s been selling well in several countries.

“I’m actually a psychotherapist and I’m interested in what makes people tick, so although it is raunchy, there is an undercurrent about the way people think. It’s about real people. It reflects on experiences in marriage, some that are based on my own life. It’s not all entirely true, but I would say the majority of it is based on reality.”

n The book reading is at Suave in Warminster Road, Westbury, at 7pm on Wednesday.