TPTB - the powers that be
TPP - Trans Pacific Partnership (an FTA)
TTIP - Transatlantic Trade and Investment Partnership (another FTA between USA and EU)
FTA - Free Trade Agreement
It is quite a long post, but it demonstrates just how much other stuff, including a raft of environmental regulation, gets put into something that most 'laymen' would expect to focus simply on trade.
While no doubt the EU is an extreme example of a trans-national organisation which aims to exercise a lot of control over its member states, these so-called free trade agreements, drawn up by international lawyers immersed in all aspects of these kind of things, also purport to cover as many areas as they can fit in.
Of course we all know that some (many) nations will minimise and even ignore many of the aspects of these agreements, and get away with it, but others, including, unfortunately, the UK, seem to observe every bit, even embellishing some aspects for good measure, ably assisted by an over zealous judiciary. Who needs enemies when our government signs us up to these kind of agreements?