The 'outsourcing' has always been for the benefit of US defence corporations.

There were a number of occasions in the 50s to 70s when the US stepped in directly to neuter world-leading aerospace projects in the UK, forcing the UK to buy from the US instead.

Virtually all of the cost of the UK's Trident deterrent goes to the US.

And it would be unwise to write off the EU, especially now there's a mass exodus of researchers from the US.