The three-part reality show, which starts on Monday at 21:00 BST, will see the broadcaster fend for himself on the inhabited island.
Without a camera crew or production team, he has recorded his journey himself with a handheld camera, body camera and a sound pack.
In May 2023, Schofield agreed to step down from ITV’s This Morning “with immediate effect” after more than 20 years, following reports of a rift with co-presenter Holly Willoughby.
A week later, he admitted to having had an “unwise but not illegal” affair with a younger male colleague and has not made a TV appearance since.
Speaking to the last June, Schofield said the affair was “consensual” but his “fault” and his “biggest, sorriest secret”.
Earlier in the year, Schofield’s brother, Timothy Schofield, was jailed for 12 years for sexually abusing a boy.
Schofield had presented This Morning since 2002, with Willoughby joining him as a co-presenter in 2009.
He is expected to talk about his departure from TV and the affair on the show.
In a teaser for the show Schofield can be seen walking on a beach with the caption: “One celebrity on a desert island totally alone with one chance to finally tell his story”.
Previous celebrities to participate in Cast Away include Joanna Lumley and Ruby Wax.
