One of the best-known acts to ever appear on Britain's Got Talent is Susan Boyle. The singer surprised audiences when she appeared on the show 16 years ago, wowing the judges before finishing as runner-up to the dance group Diversity.

Susan has previously spoken about how she nearly abandoned her plans to enter Britain's Got Talent, believing she was too old. After her performance, show judge Amanda Holden commented on the audience's original judgement, and the subsequent "biggest wake-up call ever" upon hearing her performance.

Despite being favourite to win the competition in 2008, she ended the show as runner-up. Since then, the 64-year-old has had a successful music career, releasing a number of albums and selling out shows across the world.

Sharing a clip of her BGT audition on Instagram, Susan wrote: "16 years ago today, my @bgt audition first aired on UK TV, and my life changed forever!

"I stepped out onto that stage with absolutely nothing except my dream. That was all I had back then. I was an unknown woman from Scotland, and thanks to all of you, I’m known around the world. Here’s to ALWAYS chasing your dreams!"

Fans of the show commented as they reflected on the famous audition. Braden wrote: "I was 6 when this audition was on the TV. Now I’m 22 and still to this day, it’s my favourite audition I have ever watched. Forever a legend, Susan."