It is important to put this into the context of travel and the measures and checks that we have put in place around compliance. I have already stated that Border Force is undertaking 100% checks at PCPs. Also, when it comes to carriers, there is now a carrier liability measure in place; they have that burden, and they will be given a fine if they do not check their travellers before they get on their planes, in particular. These are stringent measures with significant penalties and significant fines in place, and the carriers, which are also operational partners that we work with, are very clear about that. However, the hon. Lady is right about self-isolation. Self-isolation must take place, and that is why across Government—not just the Home Office but health and the isolation assurance service, along with the police—we are working collaboratively across the board to ensure that those measures are being adhered to and enforced.