Mrs Flyboy and I attended the recording of the final episode of this series, a couple of weeks ago. It was a celebrity edition, featuring Bill and Sian from Breakfast, Theo and Debra from Dragons' Den, the two from Crimewatch, Rav and a very, very short woman (can't remember her name) and two blokes from a channel four programme (something to do with weekenRAB). Not having watched the show before, I can't tell whether they have returned to a familiar format or not, but it was quite a good show.
One point to remark on; Richard Osman is bloody tall. He towered above Alexander Armstrong, who is alreay quite tall himself.