Young Diversity dancer Perri Luc Kiely was left in tears after he was dropped by his colleagues during a performance for Prime Minister Gordon Brown.

The frizzy-haired 13-year-old tearfully limped off after taking a tumble during their high-energy routine, but a spokesman for the Britain’s Got Talent winners later said the 13-year-old was “absolutely fine, just a bit shocked” and Mr Brown hailed him as “a wonderful guy”.

The 11-strong troupe from Essex and east London are believed to be the first group to dance in front of the famous Number 10 door after they put on a show which spoofed scenes from Parliament.

Also attending a Number 10 reception to mark the second anniversary of the Prime Minister’s Talent and Enterprise Taskforce was rapper Speech Debelle, who this month scooped the Mercury Prize for album of the year.

Mr Brown said their achievements were “a small snapshot of how much skill, talent and potential young people have to offer our country”.

The Talent and Enterprise Taskforce works with organisations in fields ranging from the arts and sport to business and education to promote the talent of young people.

Diversity’s choreographer Ashley Banjo said: “Our lives completely changed because people backed us and believed in us.

“There is so much talent in young people out there, waiting to be discovered and developed so they too can achieve their dreams.”