Why mixed measurement systems could survive into space

How long would Imperial measurements survive space exploration, and would that depend on American involvement?

Imperial units could persist through British mixed usage, while NASA is cited as an American institution using metric measurements.

British use of Imperial and metric measurements, sometimes together, is offered as a reason Imperial units could survive future space exploration. The answer therefore rejects the suggestion that their survival would depend entirely on American involvement. NASA's use of metric measurements and Wernher von Braun's work in millimetres are cited as counterexamples to assuming that American spaceflight means Imperial engineering.