The duo are set the task of diving from a 10m board in James Corden's Sky1 panel show. Olympic hopeful Daley judges Redknapp and Bishop as they accept the challenge.
"You get up there and you look down and you just think, I can't do this," Redknapp said, adding: "I already get enough stick for getting injured all the time, last thing I want to do is walk out of here in a sling."
Looking at how high up the board was, Bishop quipped: "That's a long, long way! Can we go now?"
Speaking after the challenge, the comedian said: "It was terrifying on a number of levels. One it's very high, two I've got to take my robe off next to Tom Daley and Jamie Redknapp.
"And I went and got a spray tan, obviously not a very good one, I should have kept my bermudas on! Just before we went up the coach said to me and Jamie, just concentrate on your technique Jamie, lean forward, concentrate, and then he just looked at me and said, 'You're going to hurt yourself..'."
Find out who Daley rated best in A League of Their Own, tonight at 10pm on Sky1.
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