I agree with the right hon. Lady, and she can probably guess that I will be making the point later in my speech that we need a solution that works for the whole United Kingdom. The next issue is north-south co-operation. The Committee will know that strand 2 of the Good Friday agreement sets out a framework under which the Administrations in Belfast and Dublin can establish some common policies across the island of Ireland. I am sorry, Mr Streeter; I have missed out an important section of my speech. I will just go back and ensure that I do not omit any important issues. This is the peril of taking too many interventions. The point I wanted to make is that we cannot simply wish away problems, that if we have different tariff arrangements from the EU, we will need to collect tariffs from the EU and the EU will need to collect tariffs from us, and that the Government's ambition is not enough to prevent the reintroduction of a hard border on the island of Ireland. Therefore, the north-south co-operation that has been established is incredibly important, and the United Kingdom has a solemn commitment to support this co-operation. From strand 2, the island of Ireland has the six north-south implementation bodies, and the co-operative work of the North South Ministerial Council. The European Commission reportedly estimates that there are 142 areas of north-south co-operation that are affected by EU rules and regulations. The Government may quibble with that number, but there can be no doubt that common EU rules and regulations facilitate co-operation in areas such as the environment, health, agriculture, energy, higher education and telecommunications. It was always envisaged by the parties to the peace process that EU rules and regulations would help to facilitate north-south co-operation. The Belfast agreement states that the North South Ministerial Council will“consider the European Union dimension of relevant matters, including the implementation of EU policies and programmes and proposals under consideration in the EU framework.â€As Britain leaves the EU, it falls to this generation of political leaders to face up to the challenges that Brexit poses to the Good Friday agreement and make good on the efforts of those who worked so hard to reach agreement in 1998. We must cherish and respect what was achieved almost 20 years ago. We need to preserve not only the institutions that were set up in relation to strands 1, 2 and 3 of the Good Friday agreement, but human rights and equality, the principle of consent and citizenship rights. The understanding that it is for the people of Northern Ireland, and the people of Northern Ireland alone, to determine their future is the principle that underpins the Good Friday agreement and subsequent agreements. The UK Government and the Irish Government are co-guarantors of the agreement and together must ensure that that promise is kept.