I think I have found the issue:-
2020 - Most streamed UK artist Ed Sheeran, we send some bloke who wrote a good song and got a Brit Award 7 years ai
2019 - Lewis Capaldi, we send some bloke who won X Factor then disappeared
2018 - Ed Sheeran / Calvin Harris / Little Mix, we send some woman who wrote a song
2017 - Ed Sheeran / LIttle Mix / Dua Lipa, we send some woman who came 8th in X Factor
2016 - ColdPlay / Zayn Malik / Adele, we send two blokes who didn't win The Voice
It's almost like we don't want to win.
In the last 10 years we have sent two acts that people have actually heard of, Blue and Bonnie Tyler, both quite a long way past the prime of their careers.
I did see a good post from the comedy songwriter Mitch Benn who pointed out that he could write a song which would win Song of Europe (Uk selection process) OR Eurovision but not BOTH. In other words what the UK audience wants to select, isn't the same thing as what makes a good Eurovision song.