The 41-year-old, who has two children, Ludovic, five, and Iona, four, with wife Marina Hunt, has opened up about the heartbreaking moment his son William was stillborn at 32 weeks in August 2014.
Speaking to Eamonn Holmes and Ruth Langsford, Ben said: “We lost him at eight months or so.
“It’s incredibly painful because of that very reason - it’s someone you nearly met, you dreamed of meeting, you projected what your family would be like, you projected the three children together, you did the nursery, you’d told the children.
“To have that stolen from you is painful in a way that unless you’ve been through it yourself, you can’t understand and that’s why we’ve spoken about it.”
Ben continued to explain that he and his wife had felt the need to speak out about their tragedy, because he wanted to show the public that everyone in life, famous or not, suffers highs and lows.
He continued: “I think if you’re in the public eye like I am… I’m not only going to only show the golden moments of [my life] because we all suffer highs and lows.
“My wife and I now appreciate our children. We make the most of it, we get outdoors as much as we can!”
Marina, who has been married to Ben since 2006, was looking forward to welcoming her third child with her husband.
However she suffered acute placental abruption last August when she was eight months into her pregnancy, causing her baby to be starved of oxygen - and leaving Marina just 20 minutes away from death herself.
Earlier this year, she bravely penned an article for The Telegraph about the tragedy, advising parents to be honest with their children about grief and loss.
She said: “Tell your children the truth. Children are equipped to deal with it better than we think.
“If nothing is said, the overactive imaginations of youngsters can result in them dreaming up something more gruesome and scary than the reality.”