Your 'English women' sentence is correctly written. You have the use of these words well enough to form a solid stereotype. Good. If you say "English women are engaged in" the activity, that would mean they are all doing it right now. They are not all doing it at the same time, but we can agree that saying they "are all concerned with" it at any moment is a solid sentence. ;0)

@dark: And what about this sentence? English women are more concerned with looking cool than sexy.

'engaged in' makes a sense that you are concentrated in doing the task and 'concerned with' means you are just curious about the task and look forward to do it.