<page_title> List of best-selling singles of the 21st century in the United Kingdom </page_title> <section_title> Best-selling singles based on paid-for sales </section_title> <table> <cell> "Happy" <col_header> Single </col_header> <row_header> 1 </row_header> </cell> <cell> Pharrell Williams <col_header> Artist </col_header> <row_header> 1 </row_header> </cell> <cell> "Anything Is Possible" / "Evergreen" <col_header> Single </col_header> <row_header> 2 </row_header> </cell> </table>
Evergreen was the biggest selling single of the 21st century in the UK until it was overtaken by "Happy" by Pharrell Williams.