This programme considers how policy is developed.
It asks what constraints the policy makers in Downing Street face from the 24 hour news media.
And where has policy-making gone wrong?
The former advisers include former head of policy, Geoff Mulgan; and the former head of research, Bill Bush.
They speak frankly about their time in Number 10, giving us a vivid sense of the atmosphere and mood behind the famous black door, and the likes and dislikes of a prime minister forcing through reforms in a style critics have dubbed sofa government.