Britain and International Security

On the protection of the UK as a whole and border security, the Secretary of State will be aware that the border between Northern Ireland and the Irish Republic—the land frontier between the United Kingdom and another member state of the European Union—is very open. What measures are in place to ensure that people are not exiting and getting into the United Kingdom there for nefarious purposes? We do not have the kinds of border controls that are present in relation to, for instance, people crossing from France into England.