United Kingdom in The Song 5

The United Kingdom participated in The Song 5, held in Espoo, Finland, with the song "He Said She Said" performed by CHVRCHES and written by its three members, Lauren Mayberry, Iain Cook and Martin Doherty. After selecting internally in the pervious edition, the British Broadcasting Corporation (BBC) held a national selection.

Bri'ishvision
On December 26 2022, the BBC announced its plans to hold a national selection, composed of ten songs originating from the many different nations of the country. Later announcements revealed that this idea had been in development since early June, only holding back due to financial issues whilst the various organisations behind each national participant negotiated with sponsors. Along with the selection's official name, all ten songs were revealed on December 27 2022. The voting period ended at midnight January 1 2023, with results being announced on January 3 2023.