Britain’s Got Talent’s Witch breaks silence after terrifying performance to deny popular fan theory about identity

BRITAIN'S Got Talent's Witch has denied that its identity is really one of the show's star names.

Speculation is rife that Ant and Dec, former contestant Marc Spelmann or even Stephen Mulhern could be behind the terrifying act.

But a Twitter account that appears to be run by the scary character has poured cold water on all of the theories.

Responding to an article claiming to have unmasked them, the Witch wrote: "Stephen Mulhern, Ant n Dec, Marc Spelmann. Anymore? Nobody plays me. I AM me!"

A fan begged the act to keep their true identity concealed to keep the magic alive.

And it looks like we may never know who the Witch really is as they replied: "As you wish".

The hagged performer revelled in terrifying children, retweeting messages from parents whose kids had been too scared to sleep.

One popular theory is that Sherlock star Mark Gatiss, 55, is the man behind the creepy mask.

One viewer wrote on Twitter: "Looks like Mark Gatiss in prosthetics to me [laughing emoji]."

Another said: "I was convinced that ‘The Witch’ on BGT was you Mark."

A third said: "That witch was actually (actually) terrifying & a bit Mark Gatiss-like."

Mark is a master of disguise having adopted many different characters in his career from the League of Gentleman and Game of Thrones.