The former professional rugby player has quit the Channel 4 show for undisclosed ‘personal reasons.’
Gareth’s shock departure comes just days ahead of the series final this Sunday, when he was set to take on Louis Smith, Spencer Mathews, Kadeena Cox, Jason Robinson, Emma Parker Bowles and Amy Willerton.
‘TOWIE’ star Lydia Bright, who was eliminated in the semi-final, has now returned to compete, replacing the sportsman in the final.
Gareth is the fourth star to withdraw from this year’s series.
Olympic champion Bradley was the second star to quit - Vogue Williams had to leave before the action even started - after fracturing a bone in his leg.
Spencer Matthews has also suffered an injury, dislocating his shoulder during training just days ago, though he remains in the competition.
Last year’s series saw seven celebrities withdraw.