Networks is an investigation into what oils the wheels of the British way of life. But the "Old boy network" (or OBN) is only one of the myriad networks that permeate the fabric of Britain. Networks is about what really makes Britain and the British tick. Tim Heald's investigations took him from the traditional OBN preserves of Eton and Winchester, Oxford and Cambridge, the Guards and the Garrick to the networks in Britain's prisons, in army regiments and among barrister's clerks. His interviews have ranged wide, from Cabinet ministers to convicted criminals.