I am happy to give the hon. Lady that confirmation. Due process needs to be followed in all such decisions. As I have already said to the House, the powers are used rarely. They have been in existence for over 100 years after being set out by Parliament and put in place by this House. The last time that the House updated them was relatively recently in 2014, and they have been used by successive Home Secretaries of different political colours. On each occasion, such decisions are based on detailed expert advice, including national security assessments, intelligence and advice from lawyers.