Brit Got Talent

[henrys202020]

do  the  judges  know  what  the  artists  are  going  to  do   before they  come on  stage

[douglas9401]

They even know the eventual winner as dictated by the living mummy.

[Buenchico]

The judges have notes to make sure that they ask the right questions to the right contestants.  So they'll probably have some idea of what's coming.  However they've not actually seen the acts in advance.

Although it's not directly relevant to your question, you might find this interesting, Henry:
https://www.guylloyd.co.uk/inside-britains-got-talent/

[andy-hughes]

It's entirely set up now.

From the cutaways to the judges' pantomime turning, the tears, the 'amazement', the audio for some audience members.

I've stopped watching it, I get my intelligence insulted enough without inflicting it on myself on purpose. 

[andy-hughes]

'turning' should be 'gurning'.

[naomi24]

I'm surprised anyone still watches.

[JinnyJoan]

i don't watch it either but caught the end of it when the blind couple played the piano and sang - it was glorious

[Paul22118]

My viewing came to a final halt when they put a burping woman through.  I guess she only entered to win a bet in the pub.