Being private doesn't stop something being key national infrastructure. The UK's nuclear deterrent facilities are all farmed out to Babcock, for instance, https

Being private doesn't stop something being key national infrastructure. The UK's nuclear deterrent facilities are all farmed out to Babcock, for instance, https://en.wikipedia.org/wiki/Babcock_International https://en.wikipedia.org/wiki/Babcock_International and it would be hard to argue that isn't key national infrastructure. The UK just owns very little of its national infrastructure.