As we know having cancelled the TSR2 the government then ordered the F-111K at a fixed price of £2.1m per unit for 50 aircraft in 1967.
Then in 1968 the government cancelled it incurring large penalty costs of £60m equivalent to nearly 30 F-111s.
So a vast amount of money was spent on these aircraft with nothing to show for it.
The F-111 did have its problems but either the government should never have ordered it or carried on with the deal.