It is the erotic thriller that has had blushing women rushing to the book store for their fix of 'mummy porn.'

With sales totting up to 1m books and ebooks per week and the author herself netting approximately £862,069 per week for the 20 million copies sold worldwide, it seems that Fifty Shades of Grey is the novel of the year.

One hotel manager certainly thinks so and he is swopping the Gideon bible, famed for being available in hotel rooms around the world, for copies of the book.

Wayne Bartholomew, Damson Dene hotel manager and star of Channel 4’s first ‘The Hotel’, is making the exchange today for the benefit of guests and in response to the online chatter from his 3,210 Facebook Fans.

"Fifty Shades of Grey is all that people are talking about at the moment, but I know that some are too shy to buy it for themselves.

"I thought it would be a special treat for our guests to find it in their bedside cabinet and that includes the men too.

"They are as desperate to get their hands on a copy as the women.

"Whilst we are swopping one best seller for another the similarities don’t end there. The Gideon bible is full of references to sex and violence, although it’s written using more formal language, so James’ book is easier to read."