Katherine Jenkins kicks off Grand Final of Britain's Got Talent
Britain's Got Talent's grand final kicked off with Katherine Jenkins adding a patriotic note.
The Welsh soprano sang Rule Britannia before handing over to hosts Ant and Dec.
Dancer Balance Unity (real name Taylor Goodridge) was the first of the 12 acts to perform.
He aimed to please with an energetic routine that incorporated the theme to the Will Smith TV series The Fresh Prince of Bel-Air.
Magician Richard Jones, an army bandsman of the Household Cavalry, is the bookies' favourite to be crowned winner.
But schoolgirl singer Beau Dermott, 12, has impressed with her vocals and could pull off a surprise result.
The stakes are high as a spot on the stage at the Royal Variety Performance and a £250,000 prize is up for grabs.
The grand final of the hit ITV show boasts an impressionist, a dog and a swordsman among the performers battling for victory.
They are aiming to win over the public - who will vote for the winner - and panellists Simon Cowell, David Walliams, Alesha Dixon and Amanda Holden.
Married couple Shannon and Peter Parker were the judges' pick for one of the wild card places, with canine act Lucy and Trip Hazard the public's choice for the other spot.
They are up against 100 Voices of Gospel, who won the first semi-final, and mother and son singing duo Mel and Jamie.
Wayne Woodward, the Danny Dyer sound-alike, was the public's choice in the second semi-final.
He is hoping to out-draw the competition, which includes swordsman Alex Magala from Moldova.
Dancing Stormtroopers Boogie Storm want The Force firmly with them for the final.
Rounding out the contestants are impressionist Craig Ball, who won the last semi-final, and schoolgirl singer Jasmine Elcock.
The watching millions will also see a special performance by Diversity's Ashley Banjo to mark the 10th anniversary of the series.