When people who voted to leave the EU put forward arguments based on democratic accountability, it raises a red flag to anyone who knows something about investor protection provisions of standard FTAs (given that our government is now running around offering to sign FTAs with anyone who moves).
The classic example is veolia v Egypt, in which this waste management sued the gov of Egypt for putting up the national minimum wage - 'making changes to national legislation' in breach of the terms of the FTA.
As with all such disputes, the claim is heard in secret, no third parties eg worker representatives, have a right of audience, and no information about outcome or compensation is published.
This is where we are heading everyone.
2 million people signed the petition stopping TTIP in its tracks, and I can't help suspecting that many of these were leave supporters, based on valid concerns about democratic accountability. But what is around the corner is TTIP on steroids and therefore arguments about parliamentary sovereignty and democratic accountability are hollow and misleading.