Bewes played the role of aspirational Bob Ferris in the popular comedy, alongside James Bolam who played the other Likely Lad, Terry Collier.
He then went on to star in the sequel to the show titled Whatever Happened To The Likely Lads? - which had up to 27 million viewers tune in.
In 1984, Bewes landed a role in Doctor Who, playing a humanoid named Stien in Resurrection Of The Daleks.
Following the news of his death, a number of heartfelt tributes have been posted on social media.
According to BBC, the comedic actor is survived by his four children - Billy, Joe, Tom and Daisy - and two grandchildren, Oscar and Eliza.
Bewes died just six days before he would have celebrated his 80th birthday.
Sending love to his family during this tough time.