I actually went to one of the recordings. I think they said it was episode 4, I may be wrong. All I know is that Peter Davison was a guest star and that Sally Phillips wasn't in that particular episode and that was one of the reasons (if not the main reason) I went so that was a shame. I don't live anywhere near London (it takes a long car and train journey to get there) so this was a rare thing for me to see a TV recording.
But seeing the same 5 minute scene acted out about six times in a row gets tiring pretty quickly. It is amazing though how perfect everything has to be and in what little space they have to film it all.
But once it's all put together it'll look a lot better. High hopes though for this series.