Simon Webbe and Wes Nelson have signed up for 'Sink or Swim'.
Simon Webbe
The Blue singer and 'Love Island' star are said to be part of the cast for Channel 4's upcoming four-part swimming show which will raise funds for 'Stand Up To Cancer'.
According to The Sun newspaper's Bizarre TV column, the duo will be joined by Sky News anchor Kay Burley, 'The Only Way Is Essex' star James 'Arg' Argent and Olympian Greg Rutherford.
It's also said that 'The Last Leg' comedian Alex Brooker, TV presenter Diane-Louise Jordan, Olympic athlete Tessa Sanderson, 'Hollyoaks' actress Rachel Adedeji and reality star Georgia Kousoulou will all be part of the cast.
Contestants will be guided by swimming professionals, including adventurer Ross Edgeley and Olympic silver medallist Keri-Anne Payne.
Each episode will see one celebrity booted off the show after a qualification swim, and the finalists will be challenged to swim the English Channel.
Steven Handley, commissioning editor for entertainment at Channel 4, previously said: "'Sink or Swim' promises to be one of the most perilous 'Stand Up To Cancer' celebrity challenges we have ever attempted.
"It will push the boundaries of what celebrities will endure and overcome to raise money and awareness for charity, and we are delighted to be working with TwoFour on this ambitious project."
Mel Leach, executive producer for Twofour, added: "Swimming the Channel is a monumental feat for even the very best swimmers, let alone those who can't even swim a length.
"Our brave celebrities will have to overcome their fears and embark on a huge mental and physical transformation to complete this epic challenge."
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