Britain’s Got Talent Golden Buzzer act Lifford Shillingford knew Alesha Dixon before BGT, from his touring with Artful Dodger Lifford Shillingford of Artful Dodger fame, who is Britain’s Got Talent’s latest Golden Buzzer act, revealed his link to judge Alesha Dixon. Alesha pressed her Golden Buzzer after the singer’s moving audition, performing the song A Exchange Is Gonna Come by Sam Cooke. BGT judge Alesha was went to…