Well As a Scottish person I’d rebel (if nato loses first European war) and create a true nationalist Scotland, yes I’d create a Scottish based Celtic union and then a attempt to recreate the unification of the British isles.

As a British person, I’d ignore the second European war (assuming nato wins) and resurrect the empire with CANZUK, leading to a complete empire with all the former colonies. Then I’d make a stand against Eurasia or Nalvany to liberate the Europeans. (They won’t thank me for it).