Over the years, BGT has unearthed some of the greatest talents this nation has ever seen. But, sometimes, there comes along an act that has gone on to make a global impact.

Here we celebrate those game changers!

Acts featured:
Susan Boyle
Paul Potts
Calum Scott
Charlotte and Jonathan

See more from Britain's Got Talent at http://itv.com/talent

SUBSCRIBE: http://bit.ly/BGTsub
Facebook:   / bgt  
Twitter:   / bgt  
Instagram:   / bgt