Twins John and Edward Grimes - otherwise known as Jedward - could not improve on their eighth place scored in last year's Eurovision Song Contest.
They came 19th in the show in Baku, Azerbaijan, despite an enthusiastic performance of Waterline, which saw them singing around a fountain in the middle of the stage and jumping into it at the end of the song.
The UK's hopes of breaking its Eurovision curse came crashing down when veteran crooner Engelbert Humperdinck scraped into last-but-one place.
He opened the show with ballad Love Will Set You Free - but seemed to have been forgotten by the time voting started, 25 songs later.
The contest was won by Swedish singer Loreen with dance track Euphoria. She had been the bookies' favourite and romped home with a landmark victory, scoring 372 points.
Speaking after the win, she said: "I want to say that I love you so much. Thank you for believing in me."
Popular act Buranovskiye Babushki - the six strong group of pensioners nicknamed The Russian Grannies - came second with Party for Everyone and were notable for performing with a revolving oven on the stage.
The show, watched in the Crystal Hall by 20,000 people, started at midnight local time, finishing in the early hours of the morning.