A shocking new book is set to be released on power couple David and Victoria Beckham, which promises to expose their sex life.

Posh and Becks might share cheeky moments together, including emotional birthday posts and ab-flaunting snaps but their personal life is closely guarded.

Investigative journalist Tom Bower has hinted that he will explore the 48-year-old footballing legend’s alleged affair with Rebecca Loos as he lifts the lid on the Beckhams.

The House of Beckham: Money, Sex and Power is set to be released on June 20 and Tom promised: ‘Those who want to know about Beckham’s sex life won’t be disappointed.’

He didn’t interview the couple but reportedly spent two long sessions discussing them with a senior member of David’s team.

However, that’s not to say the power couple made research easy for him as he claimed they were attempting to block him from speaking to people.

He and Victoria keep fairly private about their lives together (Picture: Karwai Tang/WireImage)

Its thought the Rebecca Loos affair will be revisited (Picture: Ken McKay/Shutterstock)
Tom claimed to The Mirror: ‘The Beckhams made sure that quite a lot of people wouldn’t talk to me. But I did find enough people to talk to and got a lot of very interesting revelations. It was a book that surprised me.

‘We think we know everything. But in fact there is an enormous amount we don’t know – which the public will find out.’

It’s not clear if the book will be damaging to the couple, especially with the suggestion that it will reignite discussions about the controversial affair.

Rebecca was his personal assistant, who worked for him during his time playing for Real Madrid in 2003 she then sold her story to News of The World.

David blasted the claims as ‘ludicrous’ with him and Victoria, 50, consistently denying any extramarital antics.

In their Netflix documentary, David said that period was the ‘first time’ the couple had been ‘put under that kind of pressure in our marriage’.

Victoria has just celebrated her 50th birthday (Picture: Victoria Beckham/Instagram)

She and David are as loved-up as ever in the face of the tell-all book (Picture: David Beckham/Instagram)
Advertising the book on their site, publishers HarperCollins wrote: ‘Through extensive research, expert sourcing and interviews with insiders, Britain’s most celebrated investigative biographer, Tom Bower, has unearthed a succession of revelations that give surprising insight into the reality of Brand Beckham.

‘Exploring the couple’s relationship, and the truth about their football and fashion careers, their finances and their new life in Miami, The House Of Beckham unravels the extraordinary reality of the business-savvy cultural icons to tell an engrossing, often astonishing story of money, sex and power.’

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Read More StoriesNeither Victoria or David have addressed the book so far, focusing on Posh’s fabulous 50th birthday celebrations instead.

Sharing a slew of throwback well wishes on her Instagram story, the Spice Girls legend wrote: ‘As I get ready to step into 50 (in heels, of course!), I feel so incredibly blessed to have reached this milestone.’

As she listed her incredible achievements, Victoria added: ‘If you’re really lucky, you’ll find someone who believes in you even more than you do. @DavidBeckham, I’m forever grateful for your unconditional love and support.’