The task ahead in these two years is colossal. It is clearly in the interests of both the UK and the European Union (and its 27 remaining member states) that Brexit is orderly. In other words, that to the extent possible, arrangements are made to ensure that agreement is reached in relation to major areas, such as trade, data sharing and data protection, and travel. The UK’s relationship with some particular member states, such as Ireland, will also require special attention, not least to try to find a way to ensure that the Common Travel Area that is so important to the two countries’ continuing relationships of politics, history, trade, friendship and kin can be sustained. All of the remaining EU27 will have an interest in making sure that their citizens, who reside in the UK, are protected and continue to enjoy security in their lives in this country, and of course the same is true for UK citizens living in other EU states.