Which acts do you think will be buzzed in the semi finals and which judges will buzz them?

Unsure about some of these, but...
Lorraine Bowen - only Simon. Amanda and Alesha have taken to her I think.
Ruby Red Performers, as I think they may struggle to live up to their audition - Simon and maybe Alesha
Luca Calo - all bar David
Narinder Dhani - same as above
Andrew Fleming - Simon; Amanda
Chloe Crawford - Amanda
Dylan Byrd - Alesha; maybe Amanda/Simon
Peter Lambert - Simon, maybe Amanda or Alesha (or even David)
Mitch and Cally - all of them if nothing goes to plan
Michael Late - All bar David

Tempted to say Jeffrey Drayton (though I really liked him) or Marc Metral, as the illusion may have worn off (pun intended) but I'll leave them out for now.

I think a lot of the time it depends on running order & the mood of the judges too.

Taking that out of account I think.

Lorraine Bowen- Simon.
Dylan Byrd- Alesha
Jeffrey Drayton- Simon
Luca Calo- Simon
Michael Late- Simon & Alesha
Mitch & Cally- Simon, Amanda & Alesha
Ruby Red Performers- Simon
Narinda Dhani- Simon, Amanda & Alesha
Peter Lambert- Simon & Amanda
Bonetics- Amanda

The judges should not be allowed to buzz any act in the live shows.
They've already made their decision by putting them through. It's now up to the public and for us to make an informed decision we should be allowed to see the whole of every act without interference from the judges.

A lot of acts will be buzzed by me on the app

I'm with you on that and you've just lived up to your username.

I agree with this.

That comb bloke definitely

Who do you think by?

In the first few series, it was likely that half the acts would be buzzed. Now the usual maximum is two a semi final (which it is just usually one). I do think this year however there are LOTS of acts who have the possibility to be buzzed by a judge or two.

Jeffrey Drayton - Simon, Amanda and Alesha
Lorraine Bowen - Simon
Narinder Dhanni - All four judges
Peter Lambert - All four judges
Dylan Byrd- Alesha
Cally the Wonderdog- Amanda, Alesha