Very good comedy actors that do their job very well. Many of the individual scenes are funny.
However, the story lines are very predictable. You can normally guess how the story will develop or end in, about 5 or 10 minutes into episode, which was typical of ITV sitcoms churned out during this time, which were normally second division to those produced by the BBC. I feel sorry for the actors having to act out such weak storylines.
Surprised this went as far as a 5th Series, and probably more if Yootha Joyce had not died in 1980. Nevertheless decent enough period 70s comedy to watch.