Yep that's pretty much how it was.
We had the main living room in front of us, and on the left with a gap for the cameras was Rottweiller's kitchen and front door.
The bedroom was behind the main living room set, so we never saw that, had to watch on the monitors, however we got to see all what Ade was doing in the kitchen. (I think I drew a plan, I will have to see if I can find it.)
There were a few re-takes, one bit comes to mind that they had to do several times. The bit where the gas man comes round when they were just about to send him bus surfing! The timing of that had to be done several times.
The last scene, when the gas pipe explodes was all pre-recorded.
There was no warm up act like with most shows, they introduced them straight away, and they themselves told us a bit about the show and introduced the other characters, plus they told a few gags and got the audience warmed up. Rik told his "Have you got the time on you, Cock?" joke.
Rik and Ade's interaction between takes was exciting to see, you could see they were taking it seriously and really cared about the show but at the same time were having an absolute ball!
There was an amazing atmosphere, I could tell I was seeing something special.
Feel free to ask any more questions, it's great to be able to share the experience. It may jog my memory.