Plot: After thousands applied and hundreds auditioned, the search reaches the live semi-finals. The final 40 acts now perform live in the hope of impressing the judges, as well as winning the all-important public vote
Cast
Simon CowellSelf - JudgeSimon Cowell was 58 in Britain's Got Talent - Season 12 - Live Semi-Final 1 (Episode 8).
Birthday: Wed, Oct 07 1959
Amanda HoldenSelf - JudgeAmanda Holden was 47 in Britain's Got Talent - Season 12 - Live Semi-Final 1 (Episode 8).
Birthday: Tue, Feb 16 1971
Alesha DixonSelf - JudgeAlesha Dixon was 39 in Britain's Got Talent - Season 12 - Live Semi-Final 1 (Episode 8).
Birthday: Sat, Oct 07 1978
Declan DonnellySelf - HostDeclan Donnelly was 42 in Britain's Got Talent - Season 12 - Live Semi-Final 1 (Episode 8).
Birthday: Thu, Sep 25 1975
Anthony McPartlinSelf - HostAnthony McPartlin was 42 in Britain's Got Talent - Season 12 - Live Semi-Final 1 (Episode 8).
Birthday: Tue, Nov 18 1975
David WalliamsSelf - JudgeDavid Walliams was 46 in Britain's Got Talent - Season 12 - Live Semi-Final 1 (Episode 8).
Birthday: Fri, Aug 20 1971
Luke JohnsonSelf - DancerLuke Johnson was >> in Britain's Got Talent - Season 12 - Live Semi-Final 1 (Episode 8).
Birthday: Unknown Birthday