One of the root causes of the Govt's Brexit difficulties is that it has overpromised.

We can, it is said, reclaim our sovereignty, with the freedom to make our own rules, and, at the same time, retain many of the advantages of EU membership. 1/14

The reality is that we cannot.

Unless we agree to certain standards and rules (and there is scope to argue about which rules), there will be borders, and checks, and tariffs. 2/

There will always be a relationship between rights (eg tariff free access to EU/UK markets) and responsibilities (eg abiding by level-playing field commitments). 3/

A 'good' outcome for the UK, in the Govt's view, would involve access gains (eg fewer border checks) without corresponding obligations (or with weak, or difficult-to-enforce obligations). 4/

The chances of this sort of 'good' outcome are low. The EU looks likely, in the face of the threats in the Internal Market Bill and now the Finance Bill, to insist on rigorous governance provisions. [Also, such provisions are the foundation of the single market.] 5/