I can't be precise but I believe that in the UK, Celine Dion's My Heart Will Go On is the one of the biggest selling songs there.
Hallelujah
adele
UK wide Bells is the biggest seller. Famous Grouse is the biggest seller in Scotland. Johnnie Walker Black label is the biggest seller worldwide whilst Glenfiddich is the biggest selling single malt worlwide.
the ford mustang
I'm not sure about worldwide sales but the biggest selling UK single is Do They Know It's Christmas by Band Aid.
bing crossby white christmas
"Chasing Cars" is the second single from Snow Patrol's fourth album, Eyes Open. It was recorded in 2005 and released on 6 June 2006 in the US and 24 July 2006 in the UK as the album's second single.[1] "Chasing Cars" gained significant popularity in the United States after being featured in the second season finale of the popular medical drama Grey's Anatomy.[2]It became notable as one of the songs that revealed the impact of legal downloads on single sales in the UK. The song is Snow Patrol's biggest-selling single to date, ending 2006 as the UK's fourteenth best-selling single of the year[3] and 2007, on the strength of downloads, as the UK's thirty-fourth best-selling single of 2007.[4]As of 25 August 2011, the single has spent 106 weeks on the official UK Top 75 Singles Chart and 150 on the Top 100[5] and has sold 505,000 copies in the UK, despite missing the Top 5.[6]
The highest selling single in the Foo Fighters discography is "Best of You". It remains the highest charting and best selling hit in the UK, US, and Australia charts respectively.
Ikea is the number one leading brand for furniture world wide. but not guaranteed to be selling the biggest furniture.
Released in August 1968, "Hey Jude" sold more than three million copies in the United States in its first two months. It eventually sold more than four million and became the fourth best-selling single of the 1960s.
The record is held by Elton John with "Candle in the Wind 1997" which sold 1.55 million copies in its first week (it sold 658,000 on the first day of release, 13 September 1997). It is also the biggest selling single in the UK as well as the fastest selling, and the biggest selling single in the world (37m copies) and the fastest selling single in many other countries also - it went platinum (sold a million copies) in 24 hours in the US. Elton outsold Dario G's "Sunchyme" by a clear margin, and this is the biggest ratio between #1 and #2 to date. Dario G sold 85,000 to hit the #2 slot that week.