"I don't mind people saying I'm gay because I am. But I don't live in a gay relationship. Sometimes I think it's just the way I have ended up and it doesn't worry me particularly," Wilson told Britain's Weekend publication, reports femalefirst.co.uk.
The 76-year-old also said how he had only had one serious relationship in his lifetime and it was with a woman.
"I had a very long relationship with a doctor when I worked at Paddington General (hospital as a lab technician). I think if I stayed with her I might not have become an actor. I suppose it is fair to say I haven't had a relationship like that since," he added.