Big Cheese Chart: ITV and Channel 4

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With MediaGuardian.co.uk revealing that David Abraham and Jane Root have emerged as frontrunners for the Channel 4 chief executive job, there are plenty of changes on our Big Cheese Chart.

Meanwhie, Sir Crispin Davis has dropped out of the race to be the chairman of ITV and Sir Michael Bishop has become the frontrunner for the job.

The Big Cheese Chart is Monkey's cut-out-and-keep – or bookmark-and-glance-at-occasionally – guide to who is in the running for the top vacancies in British commercial television: chief executive of ITV, chief executive of Channel 4, chairman of ITV, chairman of Channel 4.

All you need to know to use Monkey's "graph-o-grand-fromage" is that chief executives are in red, chairmen are in blue, and the further they are along each axis, the closer they are to the top job. Bottom right – a shoo-in for ITV. Top left – a favourite for Channel 4. Top right – in the running for both! Bottom left – taxi!