Sales of seasonal favourite track Last Christmas have surged in the month following George Michael’s sudden death.

More than 400,000 of the pop superstar’s singles and 147,500 of his albums have been sold and streamed since he died aged 53 on Christmas Day.

Last Christmas and George’s Careless Whisper and Faith are among the most popular tracks with fans, according to data compiled by the Official Charts.

George MichaelGeorge Michael tributes outside his home in Highgate (Ben Stevens/PA)

In total, George’s Wham! and solo singles had combined sales of 421,000 in the last month.

Fans have also snapped up 1998 release Ladies & Gentlemen – The Best Of which has hit number four in the Official Albums Chart in recent weeks.

Earlier this month, George’s cousin said he suspects the star died of an accidental drugs overdose.

Police said a post-mortem examination proved inconclusive and the results of further tests are yet to be revealed. His death is being treated as unexplained but non-suspicious.