Alan Partridge, Closer, an Oscar nomination … then nothing. As his Strindberg update goes on tour, the writer talks about Coogan, creativity and his days as a posh standupIt's lunchtime in a London park on the warmest day of the year, so naturally Patrick Marber has ordered porridge for breakfast. He sits in the sun with the tub of hot gruel placed next to his e-cigarette. His shoulders are hunched as though he's c…
