Which single sold the most copies worldwide Imagine or Mull of Kintyre?

"Mull of Kintyre" by Wings is the best-selling single in the UK and sold over two million copies there. However, "Imagine" by John Lennon is one of the most iconic songs globally and has sold millions of copies, but exact figures can vary. While "Mull of Kintyre" holds the record in the UK, "Imagine" has had a more significant impact on global music culture. As a result, "Mull of Kintyre" sold the most copies worldwide among these two singles.