On June 9, 2007, Potts’ audition of Simon Cowell’s new search-for-a-star show Britain’s Got Talent was televised on ITV1 in the UK. The audition itself was held at the Wales Millennium Centre in Cardiff on March 17, 2007. Paul sang Giacomo Puccini’s “Nessun Dorma,” for which he received a standing ovation from the audience of 2,000 people. Contrary to popular belief, Paul did not sing a condensed version of the aria, but the full rendition. The editing process did not produce a “perfect” edit, as you can see his lips getting ready to sing the next line after his second “…Nessun Dorma…”, which starts with “Tu pure, o, Principessa…”. Potts’ rendition of this has been viewed on video upload site YouTube over 20 million times and is the highest rated video as of January 10, 2008 .
In the semi-final on June 14, 2007, Potts performed main verses of “Con te partirò” (“Time to Say Goodbye”). He progressed to the final after receiving the highest public vote in that show. He performed a full-length “Nessun Dorma” for his finale on June 17, 2007 as well as an encore after he won the competition. Potts defeated co-favourite with the bookmakers, Connie Talbot and received the highest public vote out of two million votes cast to win Britain’s Got Talent, winning the right to perform at the Royal Variety Performance on December 3, 2007, in front of Her Majesty The Queen.
In December 2007, along with Simon Cowell in his Rolls-Royce Phantom, he was driven to Number 10 Downing Street to be greeted by the Prime Minister, The Rt. Hon. Gordon Brown MP who presented Paul with a discography plaque for the achievement of selling 2,000,000 copies of his album “One Chance” and for showing that “… Britain really does have huge amounts of talent.” – Gordon Brown, December 2007