In Saturday’s episode, viewers will see Kathleen Jenkins attempt to impress judges Simon Cowell, David Walliams, Alesha Dixon and Amanda Holden.
The 25-year-old part-time entertainer lives with her husband at her parents’ home because the young couple are not financially in a position to afford their own property.
“I do like my job because it pays the bills, but I daydream about being on stage,” she admits just before her audition.
The stakes are high because the 2016 winner will receive a cash prize of £250,000 and a slot on the Royal Variety Performance later this year.
“I’m nervous about auditioning because it’s a life-changing opportunity,” Jenkins tells the ITV show.
“I could be doing my dream job. This could change everything.”
Viewers will soon find out if her performance of Wild Horses by The Rolling Stones secured any yeses from the judges.
Joining Jenkins is Ruby Murry, a 34-year-old drag performer who mainly performs in front of cabaret audiences in bars and restaurants.
Tom Lee, the Londoner’s real name, studied musical theatre at Arts Educational Schools, commonly known as ArtsEd.
The watching millions will see Ruby light up the stage with some colourful attire and a warm personality.
“This is like an act or a lifestyle?” Cowell asks.
“It’s an act. I’m not on a journey,” Ruby responds.
Walliams sparks more mirth when he quips: “If only Pavarotti had dressed like that.”
Britain’s Got Talent (BGT) prides itself on being a competition open to performers both old and young.
Colin Henry, a 68-year-old from Doncaster, is one of the veteran performers in this week’s instalment.
Henry hopes his unusual way of playing the piano will receive positive comments and a pass into the next round from the judging panel.
Dance group Bespoke Candi range in age from 20-28.
Members include a primary school teacher, a project manager and a full-time cheerleader.
“Hang on. You can get a job as a full-time cheerleader? Well, I’d love to do that,” Walliams jokes.
But the routine to the theme tune from popular cartoon series The Flintstones will be seen to baffle judge Dixon.
“I genuinely am confused ... why is there a dinosaur in the middle of the stage?” the former Mis-Teeq singer asks.
Other acts featured in week three of the auditions include all-girl choir Presentation School Choir and martial arts teachers Lisa and Chris Pitman.
Britain’s Got Talent is broadcast on ITV at 8pm.