Richard Murphy is seen as the “brains” behind Corbynomics.
But until recently many leading economists had not even heard of him.
The chartered accountant and tax expert, from Downham Market, Norfolk, is set to become one of Team Corbyn’s key advisers on policy in the coming years.
Dad-of-two Murphy, 57, works mainly from home, but was a fixture on Corbyn’s campaign trail, often warming up audiences with fiery speeches attacking tax avoidance and high executive pay.
The former Southampton University economics graduate claims “People’s QE” is just “part of an armoury” of policies aimed at creating new jobs.
But last night economists cast doubt on his standing.
Prof den Haan admitted: “I’ve heard very little of him.”
When asked if he was a big name among leading economists, he replied: “No, definitely not.”
Prof Yates said: “He’s well known now, extremely well-known in the last few weeks and months because of his blogs and Twitter posts.
“But I think on the issues of ‘People’s QE’ and renationalisation, he’s potty.”