'Home to Roost' is a cracking show, especially Series 1. John Thaw and Reece Dinsdale had a terrific on-screen rapport and the Eric Chappell scripts were well up to par. Actually, I prefer it to 'Only When I Laugh' and it may be in my top ten fave sitcoms.
There's an episode, 'Dating Henry', from S1 which IMO is laugh-out-loud funny from start to finish and as good as anything Chappell has written. But really all of S1 is worth a look.
Patchier thereafter I think, but the basic set-up is sound and John Thaw was a brilliant comic actor.