Dubbed the ‘coughing major’, Charles Ingram was found guilty along with his wife Diana and their accomplice Tecwen Whittock of cheating their way to the £1 million prize on the show in 2001.
Discussing her new venture at the 65th Evening Standard Theatre Awards, Clifford promised that the case is “not what we think.”
New light: Clifford promised the series will present a different perspective on the case / Dave Benett
“I finished [Quiz] a few months ago with Helen McCrory,” she told the Standard. “I’ve seen all the episodes now, we’ve got a wait until it’s coming out here but [I’m] absolutely brimming with excitement to share that with the world.
“That story is, I hope, about to get blown wide open because it’s not what we think.”
Adding that the Ingrams’ case was “everywhere” in 2001, she said: “You couldn’t avoid it and it’s been amazing to dive back into it and look at it from the Ingrams’ perspective.
Likeness: Clifford and Macfadyen star as the Ingrams (ITV)
“We’re really hoping to shed some light on it, with the show.”
Clifford will appear alongside Succession’s Matthew Macfadyen, who plays Charles Ingram, and Michael Sheen, who stars as Who Wants To Be A Millionaire? host Chris Tarrant.
McCrory, Mark Bonnar, Michael Jibson and Aisling Bea will also star in the series, directed by Stephen Frears.
65th Evening Standard Theatre Awards 2019: Show - In pictures