The history of the chart-topper
After 53 years and 999 chart-toppers, the 1000th No 1 is due to be revealed on Sunday - and sales figures suggest the honour will belong to Elvis' re-released classic One Night.
If Presley triumphs, it would be fitting, as he currently holds the record for the most No 1 singles in the UK chart (19 so far) - and has been hitting the top spot since the early days of the hit parade.
For all latest news, follow The Daily Star's Google News channel. But of course, the No 1 single has come a long way in the past six decades.
The first No 1, in November 1952, was Al Martino's Here In My Heart, which held the top spot for nine weeks.
The same decade also saw Bill Haley become the first artist to sell over a million with a number one single, when Rock Around The Clock reached the top in 1955.
It was also the decade in which Elvis topped the charts for the first time, with All Shook Up in July 1957.
By the 80s, an increasing number of charity singles and soap stars jostled for the top spot.
Bryan Adams holds the record for the longest chart-topper of all time
And as the 90s rolled around, Bryan Adams broke a record which had been held by Slim Whitman since 1955 when he scored the longest-reigning No 1 single Everything I Do (I Do It For You), from the film Robin Hood: Prince Of Thieves, which spent 16 weeks at the top spot before U2's The Fly finally displaced it.
The 21st Century brought with it an influx of reality TV stars, with the likes of Michelle McManus, Will Young, Gareth Gates, and Hear'Say all hitting the top.
While there are still those that pass the all important million mark (Will Young's Evergreen and Britney Spears' Baby One More Time being two examples) sales are in general on a decline.
With single sales falling over the last two years and downloads becoming steadily more popular, the future of the chart-topper could be very different.
"Music is everywhere now, accessible in all kinds of places and on all kinds of formats," says Gareth Grundy, Deputy Editor of music magazine Q. "The single lost its power as a cultural artefact ages ago."