Spare is the only non-fiction book to make it into the top 10 fastest-selling books in the UK since records began (Picture: PA)

The Duke of Sussex’s memoir Spare has become the fastest-selling non-fiction book in the UK since records began in 1998.

Prince Harry sold 467,183 copies of his controversial autobiography in the first week, according to Nielsen BookData.

A previous record of 210,506 had been set by the first Pinch Of Nom cookbook – written by Kay Allinson – in 2019.

But these are not the final figures as the Nielsen BookData does not include e-books or audiobooks and refers only to the sale of physical copies.

Spare, ghostwritten by JR Moehringer, is the only non-fiction book to make it into the top 10 fastest-selling books in the UK since records began.

Since January 1998, JK Rowling has dominated the chart, with four of her Harry Potter novels sitting at the top.

Meanwhile, Dan Brown’s The Lost Symbol claims the fifth spot ahead of Spare at number six.

To claim number one on the chart, which looks at the first week of sales only, Rowling’s Harry Potter And The Deathly Hallows sold 2.63 million copies in its first week in 2007.

Spare made explosive claims about the Royal Family, including that the Prince of Wales physically attacked his brother in a row over Meghan Markle.

Harry appeared to confirm reports of a rocky relationship between his wife and the Princess of Wales by sharing texts showing a tense exchange over a bridesmaid dress.

Speaking about his stepmother Camilla, Harry claimed she ‘sacrificed me on her personal PR altar’ to ‘rehabilitate her image as a villain’, after Princess Diana referred to her as the ‘third person’ in her marriage.

There are rumours Meghan may write her own memoir (Picture: Mike Coppola/Getty Images for 2022 Robert F. Kennedy Human Rights Ripple of Hope Gala)

He also alleged his father put his own interests above his sons’ and didn’t hug him after telling him his mother had died in a car accident.

But he described Diana as his ‘guardian angel’ and said she is with him ‘all the time’.

Buckingham Palace has refused to comment on the book and there are differing reports on if Harry will be invited to the King’s coronation in May.

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He sold 467,183 physical copies of Spare in the first week, according to Nielsen BookData.