He wasn’t the first and we now know he won’t be the last: David Tennant has announced he will be stepping down as the nation’s favourite doctor following the 2009 series.

So who do you think should succeed Tennant to become the 11th incarnation of the Timelord? Cold Feet star James Nesbitt, John Simm of Life on Mars and David Morrisey of the political drama State of Play have all been tipped, while Peep Show actor Paterson Joseph, who would become the first black Doctor, is currently the bookie’s favourite. Or should the Beeb be looking elsewhere?

Write in to nominate your choice to take the Tardis into the future.