Jamie Dornan's father says the "best" thing about his son becoming famous is that people can now spell his surname

He said: "The best part of the whole thing is the world now knows how to spell Dornan, I spent 40 years spelling it correctly to people."

Jim also revealed he is pleased with how the erotic film - which also stars Dakota Johnson - turned out and believes director Sam Taylor Johnson did "very well" with the script.

He added: "I thought the director did very well. You can only work with the materials you're given, which is a great line.

"I know it's a weird thing to say about your son but he's one of the nicest people I know. He a good guy."

And it's not only with fans where the 32-year-old actor is revered as Jim says his son is incredibly "influential" within the family.

He added to RTE Radio 1: "He is quite influential in the family and always was.

"He's solid, a very grounded boy. A good lad ... He's sisters are very proud of him - we all are. He's held himself well."