Later in the interview, Ben talked about Bob’s famous secret source, whom he claimed to have met in an underground garage in rendezvous arranged via signals involving flowerpots and newspapers. “You know I have a little problem with Deep Throat,” Ben told Barbara.

“Did that potted [plant] incident ever happen? … and meeting in some garage. One meeting in the garage? Fifty meetings in the garage? I don’t know how many meetings in the garage … There’s a residual fear in my soul that that isn’t quite straight.”

I read it over a few times to make sure. Did Ben really have doubts about the Deep Throat story, as it had been passed down from newsroom to book to film to history? And if he did, what did that mean?’

In a way, he says, ordinary Afghans are far more powerful than British citizens, because at least they feel they can have a role in one of the country’s 20,000 villages. “But in our situation we’re all powerless. I mean, we pretend we’re run by people. We’re not run by anybody. The secret of modern Britain is there is no power anywhere.” Some commentators, he says, think we’re run by an oligarchy. “But we’re not. I mean, nobody can see power in Britain. The politicians think journalists have power. The journalists know they don’t have any. Then they think the bankers have power. The bankers know they don’t have any. None of them have any power.”

And this from a man who only two years ago attended the Bilderberg conference, a highly exclusive and secretive gathering of the world’s most powerful bankers, politicians and businesspeople?

“Well there we are, you see,” he smiles. “I can tell you, there is nothing there. It’s like the wizard of Oz. This is the age of the wizard of Oz, you know. In the end you get behind the curtain and you finally meet the wizard – and there’s this tiny, frightened figure. I think every prime minister has sort of said this since Blair. You get there and you pull the lever, and nothing happens.”