A prominent Brexiteer has blasted the Organisation for Economic Co-operation and Development (OECD) for the report it delivered on Tuesday.
A representative from the Paris-based group delivered a report to Chancellor Philip Hammond which said UK growth would rise if Brexit was reversed by a major political decision, like a second referendum.
The thinktank said Britain should remain close to the European Union or risk a long-term, slow decline.
Richard Tice, the co-founder of Leave.EU and co-chair of Leave Means Leave, expressed his fury over the report.
He told Julia Hartley-Brewer: "How can you respect anyone whose predictions have turned out to be so completely and utterly useless over the last 15 months?
They said we’d lose jobs, jobs are up. They said interest rates and the stock market would go down, they’ve gone up.
"People should take this for what it is – an attempt to interfere in a democratic right of a sovereign nation. It should just be ignored.
"Frankly, I don’t see why we bother subscribing £10 million a year to this clueless organisation. We should scrap the fee and employ a couple of hundred nurses instead."