Does anyone remember Big Brother Celebrity Hijack? There were two circus performers who regularly did some act on a rotating platform. Were they in the BGT Circus of Horrors act?

Don't know, but Emilia Arata (the BB housemate) was part of the Circus of Horrors in 2008.

http://www.youtube.com/watch?v=Cus_2o38y-w

Emilia.
How I loved her.
Sighs.

http://www.youtube.com/watch?v=-gb-qTVoecc

The people at 1:31 are definitely doing the same act, but I'm not sure if it's them...

I had the exact same thought, it reminded me of Emilia and Victor. But I couldn't get a close up to verify it.

The Skating Arata's used to be in The Circus Of Horrors. I saw them in their show a few years ago. They have since moved on and there's now different people performing that act.

the couple on bgt looked sloooow

Oh Emilia and Victor <3 Good times!