Osborne’s eight equation mathematics mumbo-jumbo was countered by Question Time audience member Tim Martin’s own analysis:

“I took the £10 billion of net savings that we would make if we left Europe, and I multiplied those by 14, which is obviously the number of years up to 2030. I then used the economic credit multiplier because of course you have the benefit of spending that £10 billion, the taxes raised on it, on economic growth and so on. And do you know the figure I came up with? The figure I came up with is £1.5 trillion, which means if we leave the European Union we’ll be able to fund and repay the national debt by the time 2030 comes.”

Well Tim is an economist…