Wonderful chemistry between leads
This is one of the best shows around. Such understated humor and the chemistry between Penelope Keith and Peter Bowles really makes it. It's unusually short, ending at a point where other shows might have jumped the shark, as they say. I wish there had been more episodes in between but maybe that's one of the things that makes it so memeorable.
I have a notion that one of the things that distinguishes US tv series from British ones (except for serials like Eastenders) is their intent on an infinite run. My favorite British comedies seem to wind up after a few years, and I've read elsewhere that they produce fewer episodes per season than US shows. I guess it's a matter of quality over quantity. The powers that be behind many US series churn out so many episodes that even the best series cannot maintain consistent quality within one season, let alone from year to year. In the US, it's more, more, more. In the UK it's not more just more consistently good.
If you're a big fan of To The Manor Born, check out Executive Stress. It also stars Peter Bowles and Penelope Keith as a married couple working at the same publishing company. Actually Geoffrey Palmer played the husband in the first season. As good as he otherwise is, there was no chemistry between him and Keith.