The British tend to take greater care to craft and create their television comedies. This is one of them. There are so many Britcoms which are far superior to American fare...the only thing is that as Americans we never get to view them except for the exceptional Public Television offerings. And thank God for them.
Two's Company is a rare gem! Enjoy the relationship between Dorothy and Richard. It is precious and priceless! I own all these episodes and I can honestly say they are a treasured collection since I savored them nearly two decades ago, and the soothing bantering and comedy hold true today.
My recommendation is buy buy buy the four season collection before they are discontinued...and they will be!
