Are the Christmas specials for TV pre- recorded?

[katyringo]

Or should I worry about it during my trip? I have MK reservations/Christmas party tx for the 28th

 

[erionm]

Or should I worry about it during my trip? I have MK reservations/Christmas party tx for the 28th

Pre-recorded.

 

[JCornell]

Based on some posts I've seen on Twitter etc., I think some of the recording has already been happening.

 

[DebbieB]

Recorded last weekend