Great Yarmouth, a place where families gather all year round, come together and visit the seaside, eat ice cream and play on the arcade machines. But deep down the seafront, hidden in the industrial estate, lies a factory that is responsible for making the parts that, without them, the F-35 jets wouldn’t be able to operate. The company is called Spectrum Control LTD. You won’t find much advertising for it; in fact, if you go to the factory itself, there are no big signs on the doors or obvious branding. But if you dig deep enough into a combination of the…