The Larkins update

Series 4 added to The Larkins, one of the earliest survivng British sitcoms. That wraps up the original run of the program. It did return for another 15 episodes a few years later, but I believe it was just Peggy Mount and David Kossoff as Ada & Alf Larkin and was in a different setting. I can't find that information but seem to recall reading that once. So Joyce and Jeff, Eddie, and neighbors Myrtle, Sam and Hetty were not in the later version.
http://www.televisionheaven.co.uk/larkins.htm