Charles and Camilla, who are busy preparing for their coronations, visited Liverpool and lit up the arena hosting the global show, which will crown a national winner on Saturday May 13.

Eurovision 2023 managing director Martin Green said the royal couple expressed 'interest' in the event, and he dubbed the week between the coronation and the song contest’s grand final 'the most extraordinary seven days'.

The King and his wife met Muller after they were given a behind-the-scenes tour of Liverpool Arena, which is hosting the semi-finals on May 9 and 11 as well as the grand final on May 13.

Chatting to the singer, who hopes her track, I Wrote A Song, will end the UK’s 25-year wait for victory, Charles gave her encouragement, saying: 'We will be watching you with great interest – egging you on.'

Muller replied: 'Thank you, no pressure. No nul points', and Camilla echoed her words, saying: 'No! No nul points.'