X Factor judge Louis Walsh has re-ignited the war of words with Strictly Come Dancing after he called it a ‘warm-up act’ for the ITV1 show.

The two shows are once again set to launch their Saturday night rivalry when they both go live for the first time this weekend – and with Strictly having beaten X Factor in the ratings on several occasions in 2011 the battle for viewers is likely to be hotter than ever.

However Louis remained dismissive of both Strictly – which will be screened earlier than X Factor on Saturday at 6.30pm – and presenter Bruce Forsyth, saying, “Strictly is like a warm-up act for the X Factor, with a very old frontman.”

And he made a further swipe at the veteran star’s age as he added, I don’t think you’ll see me on television when I’m 84. Andy Williams has just died and he’s 84.”

The two shows will not overlap in the schedules this weekend, as Strictly is set to finish at 7.45pm, 15 minutes before X Factor begins.

However reports suggest there will be an overlap of five minutes between the two shows next Saturday.

Strictly is midway through a double bill of shows to kick off the 2012 series, with the first six couples taking to the floor on Friday night. The remaining eight will make their dance debut on Saturday.