Hairy Bikers
Their first appearance on UK television was as presenters of "The Hairy Bikers' Cookbook" , which began on the BBC in 2004 and continued for four series . 
<triplet> The Hairy Bikers' Cookbook <subj> 2004 <obj> start time <triplet> Hairy Bikers <subj> 2004 <obj> work period (start)