Original sentence: Dad's Army was often repeated several years after it was originally shown, and during the 1990s it became widely regarded (along with Morecambe and Wise) as representing a "Golden Age" of British television
Edited sentence: Few would deny that Dad's Army was good, and it is worth noting as one of the few British TV comedy series which both had a very lengthy run and kept up a  fairly high standard for much of that run (although it did start going downhill during the last three series).It was often repeated several years after it was originally shown, and during the 1990s it became widely regarded (along with Morecambe and Wise) as representing a "Golden Age" of British television