https://www.yahoo.com/entertainment/tv/articles/two-most-important-70s-sitcoms-212000132.html

American remakes of British TV shows are nothing new. Two of the biggest '70s sitcoms were adapted from UK comedies, with some notable changes.

America’s Most Important ’70s Sitcoms Owe Everything To Two British Originals (https://collider.com/american-sitcom-origins-all-in-the-family-sandford-and-son-explained/)

Many hit U.S. sitcoms were reimagined from candid British TV originals.