"You do understand you'll have no editorial control? None. The BBC and Channel 4 are very clear about that. Control will rest solely with the broadcaster. There's absolutely no wiggle room." The speaker was Alan Hayling, editorial director of Renegade Pictures. We were sitting in Soho House and he was one of over 40 television producers who approached me last autumn with a view to making a documentary about my group's efforts to set up a Free School in west London.