Published Sunday, 03 March 2013
Gareth and partner Robin danced to Coldplay's Viva La Vida (© ITV)
Gymnast Beth Tweddle, boxer Luke Campbell and Eastenders actor Matt Lapinskas were automatically put through to next week's showdown after Gareth was not well enough to skate again following his first routine.
"Tonight's viewer vote has been cancelled. If you have voted, please check back here tomorrow for details on how to claim a refund," show bosses said in a statement to UTV.
Gareth was unable to perform the required flying routine which had left him suffering from severe motion sickness during rehearsals.
"I don't like heights and I certainly don't like spinning!" declared Gareth as he began his harness training.
Despite feeling sick, the contestant managed to take on an inspiring routine to Coldplay's Viva La Vida with professional partner Robin Johnstone during the live show, scoring 33.5 out of 40.
He left the stage unable to talk after winning praise from judge Ashley Roberts who applauded his "transformation" during the course of the show.
Later a doctor warned him he was too unwell to carry on.
Earlier this week, mentor Jayne Torvill admitted: "I think that's the first time I've seen anyone be physically sick after a spin."
Meanwhile, Matt and his partner Brianne Delcourt topped the leaderboard.
The favourites danced to Straighten up and Fly Right by Robbie Williams, before skating to Michael Jackson's Bad.
Their last dance brought a full top marks from Jason Gardiner, who said: "We really needed that tonight - that was a semi-final performance and had everything in it."