The fitness guru – real name Derrick Evans – dislocated his knee during a trial run of the show and will need to undergo corrective surgery.
“I’m devastated. A heartfelt thanks goes to all the team but especially my gymnastics partner Kerry and coach Alberto, who have been so supportive and brilliant to work with – I’m sorry our journey has been broken this way.” – Evans
Evans, who became prominent in the early 1990s through his appearances on GMTV, will be replaced by former Blue Peter presenter Peter Duncan on the BBC One show.
Tumble will kick off on Saturday 9 August and sees ten celebrities partner with professional gymnasts as they learn and perform various disciplines from the world of gymnastics.
The One Show co-host Alex Jones will preside over each episode, while Olympian Beth Tweddle will act as a mentor to the contestants including former EastEnders star John Partridge, Loose Woman Andrea McLean and Girls Aloud’s Sarah Harding.