Back in 2001, along with much of the rest of the UK population, I started watching a new kind of television show. It purported to be a documentary, set in a fairly ordinary, Slough-based company. The camera lingered too long on participants’ awkward expressions, it picked up whispered conversations which weren’t meant for public consumption and it kicked off one of the most hotly debated, “Will they, won’t they?” office relationships in the shape of Tim and Dawn.