The 74-year-old star said he believed one of the most dangerous scenes he filmed with on-screen wife, Betty, played by Michele Dotrice, involving a car hanging over a cliff, would no longer be allowed.
Crawford, who is reprising his role as Frank Spencer for a one-off special for Sport Relief, told the Radio Times: “When Michele’s mother saw that scene, she slapped her daughter’s face and she never spoke to me again.
“Of course these days it’s all much more difficult with health and safety rules. We didn’t have those 42 years ago.”
Discussing other stunts which would have been abandoned today, he added: “I think the one where I am taking my driving test and I drive off the end of the pier into the sea. I don’t think they’d allow that now.”
Crawford said that he had refused a number of requests to revive his character since the sitcom ended in 1978, and denied there were plans for a new series.
The actor will reunite with Dotrice for the Sport Relief sketch, which will be shown on BBC One on March 18.
The scene will see Frank land himself in a few of his usual disasters, culminating in a meeting with Olympic cyclist Bradley Wiggins .