I certainly do not see the choice the way you do. My biggest objection to the EU is that it is centralising and trying to create a new country A risky exercise without common identity. A common currency that failed to be followed by fiscal central control was a huge mistake and lead to crisis in weaker economies (and the way Greece was treated, with de facto punishment imposed in return for bailout) was a disgrace. I will admit other multilateral organisations do similar (e.g. the domestic debt default unnecessarily imposed on Sri Lanka).
The UK has been playing airstrip one for a long time anyway. In someways we should be more like the French in terms of those policies.
In general, the way the EU is headed confirms my fears. Look at the last Dutch election, for example. There is a lot of bad legislation, a lot of lobbying by corporate interests - the government of the EU is far more removed from the people than national governments (which are bad enough) are.
(I had been under the impression that the choice on offer was between being a rather weighty part of the EU and, under the guise of "independence", playing Airstrip One to the US' Oceania, but perhaps I am mistaken?
China is playing Eastasia, of course. Not bad for 1949 speculation, even if it was based on 1920's-1930's nonfiction.
In a different fictional universe: "Always two there are")