Armando Iannucci is likely to end The Thick Of It to work on a new comedy about dotcom billionaires.
He has written a pilot episode of a new show about the world of social media for US broadcaster HBO - which already airs his US political satire Veep.
But in an interview with the Observer tomorrow, Iannucci said he would proably end the Westminister original after the fourth series, which begins on BBC Two this week.
'Probably this will be the last series of The Thick of It,' he said. 'The door is left open at the end to come back and do specials, but I feel I have explored every crevice now and it's time to take stock and move on. I'm thinking about the power of the internet.
'Microsoft, Google, Facebook; you have these twentysomethings who have a way into billions of households. Where's the power gone? The power is gravitating towards these companies.'
'I'm interested in that personal thing of what it does to you when you're 25 and you're a multibillionaire and everyone in the world knows who you are.'
So far the traditional media has been slow to examine Silicon Valley, with the film The Social Network - about the founding of Facebook - being a noteable exception.