Complex sentence: Series X will consist of six episodes, recorded in front of a studio audience in December 2011-January 2012 and began on 4 October 2012, on Dave and also on Dave HD.
Split into simpler sentences: Series X will consist of six episodes, recorded in front of a studio audience in December 2011-January 2012. The opening episode of this revived series was broadcast on 4 October 2012, on Dave and also on Dave HD.