On 4th April, the UK parliamentary ‘Exiting the EU Committee’ (for clarity, not a UK government body) published a report based on its inquiry into the Article 50 negotiations through which the UK will leave the EU.  The report has 181 paragraphs of detail which you can read here if you would like to.  But the final paragraph lists 15 tests against which this committee will judge the results of the negotiations with the EU, due to be agreed by October 2018, about the UK’s future relationship with it.  There is much to agree with in these 15 tests but it seems highly unlikely, given the negotiating position of the EU so far, that they will all be passed.  The question, not answered, is what the Committee, and the rest of parliament proposes to do if they are not.