EL James's Fifty Shades trilogy has topped the Amazon UK all-time bestseller list, Digital Spy said.

The combined list for physical and Kindle books had Fifty Shades of Grey in top place, followed by sequels Fifty Shades Darker and Fifty Shades Freed.

Following the explicit trio was all three books in Stieg Larsson's Millennium Trilogy, with The Girl with the Dragon Tattoo in fourth followed by The Girl Who Played with Fire and The Girl Who Kicked the Hornet's Nest.

"Of all the millions of books customers have purchased in the past 15 years, it's fascinating to see which have proved most popular with the British public," said books manager at Amazon.co.uk Darren Hardy.

"Sales of Kindle books have been hugely influential in determining these rankings, with EL James's sales on Kindle for the Fifty Shades Trilogy cementing her place as our most successful author ever."

Despite only coming 10th in the overall list, the physical book of Harry Potter and the Deathly Hallows was the fastest-selling item across the complete Amazon product range.

Movie adaptation Harry Potter and the Deathly Hallows Part 2 was the fastest-selling DVD over the 15-year period.