Davina left the house at 11pm.
 

Just setting the record straight a bit why people are wondering why she isn't on live feed at all etc ...

As everyone knows the live show is on a delay which happened for the first show as usual. The second show was recorded almost straight after and during the hour long break, with Big Mouth following.

That means Davina went into the house before BB came back on air and probably left before she went in on screen!