Hang on. Only just back home, I have a day job on Tuesdays.
I'm pro-EU in as far as I'm not sufficiently eurosceptic to think leaving worth the wasted time, money and emotion. The lack of progress to date suggests that's a common view in Whitehall and Westminster, too.
I don't especially have a wish to prevent a USE. It's that I don't see it happening any time soon and think the prospect of it has been exaggerated so as to create a bogeyman for the man on the Clapham omnibus.
Even if it were to happen it would not include the UK and several of the other 'outer' states, so there would probably, in some distant future, be an inner and outer structure (or a two-speed Europe or a balance of power in older terminology).
As for ancient history I agree that the UK's policies are designed to secure our shared values with our European partners but am not aware of any particular FCO concerns about a USE.