15 per cent of the work is in the UK, right. So how much of that ends up as additional government tax revenue? Say one-quarter, so 3-4 per cent of the cost ends up in the government coffers. So your magic break-even occurs at 3400-4600 aircraft for the UK's 138-jet buy. That's what I call a long-term investment.
By the way, there is an economic fallacy here: The government might get better or equal returns spending the money another way.
Last edited by LowObservable; 9th Dec 2013 at 12:17.