We would have to accept the whole kit and kiboodle if the UK rejoined. Schengen, The Euro etc.
The Tories managed to negotiate some concessions because at the time we had a huge international influence. That's gone now. We'd be in the bottom tier of the EU states, not a top dog anymore should there ever be a vote to return.
The UK politically is the grumpy old bastard at the bar that people find endearing but ignore their rants and take the piss out of them when they start.
I personally have no issue with that. I'd say the gammonati that voted for a lie still would. They'd rather see this country's inequality grow to the standards of India rather than admit they were lied too.