Britain's Got Talent - Season 13 File

X , a mysterious mentalist later revealed to be Marc Spelmann , a former semi-finalist who had returned under a mask to emphasize themes of hope.

A group withdrew following the tragic death of one of its members; their audition was never aired out of respect. Judges and Production Britain's Got Talent - Season 13

A high-energy children's choir (David Walliams' choice). X , a mysterious mentalist later revealed to