John Challis, who played Boycie in Only Fools And Horses, acted alongside Fortune.
Paying tribute to his friend, he tweeted:
So sad to hear that John Fortune has died.I played henchman to his chief villain in Cat's Eyes and we laughed a lot.Another goodun gone.
More top news
The European Commission has ordered Ireland to recoup 13 billion euro from tech giant Apple over a sweetheart tax deal.
About 6,500 migrants have been saved off the Libyan coast in one of the largest rescue missions this year.
Amy Sharp, 18, posted the request on a Facebook post appealing for her whereabouts after she escaped from a police station.