Adele's 21 has now outsold Michael Jackson's Thriller in the UK.

The "Rolling In The Deep" hitmaker's second album - which was released in January 2011 - has sold 4,274,300 copies in Britain, more than 500 more than the late singer's 1982 classic record, meaning it is now the fifth best-selling album of all time in the UK. "To add to her many landmark records, Adele's achievement in overtaking Thriller in the all-time sales list is truly remarkable. Thriller has long been recognized as one of the most iconic albums of all time - there is now no doubt that 21 can be spoken of in the same breath," said Official Charts Company's managing director Martin Talbot.

According to the organization, 21 - which has spent 23 weeks at the top of the UK singles chart - continues to sell around 20,000 copies a week. This means it could catch the four other albums which have currently outsold it in the UK.

Topping the best-selling list is Queen's Greatest Hits with 5.83 million sales, followed by The Beatles' Sgt Pepper's Lonely Hearts Club Band. ABBA's Gold compilation and Oasis' second LP (What's the Story) Morning Glory hold third and fourth place respectively.

To date, Thriller has sold more than 100 million copies worldwide while 21 has clocked up global sales of around 20 million.