He has since been told the cancer has spread to the brain and is now terminal.
Speaking to Hello! Magazine, the property expert said the diagnosis came after experiencing blurred vision in 2020 while filming.
He said: “Within a week of flying back from filming, I was being given six months to live.
“I had to go home and tell my wife, who was looking after our babies, that she was on her own pretty much. That was devastating.
“All I could do was apologise to her. I felt so responsible.”