How American isolationism could sustain British aircraft production

How would an isolationist United States affect Britain's aircraft industry?

With America focused inward, an imperial federation would rely more heavily on British aircraft production and preserve programmes that might otherwise disappear.

An isolationist United States would likely concentrate production on American requirements rather than compete for allied orders. A British imperial federation would consequently draw aircraft and ships from its own industrial system. American reluctance to supply weapons and spare parts follows from the desire to avoid being pulled into a customer's war. Projects historically abandoned under American competition or dependence might therefore continue. The counterfactual links foreign policy to the survival of design teams, production lines, and military equipment programmes.