My hon. Friend is absolutely right. Border Force is doing incredible work on the frontline; I am seeing that and getting reports of that every single day. It is important that its staff stay safe, which is why we have strong measures in place for them. Enforcement, whether it is through policing or the IAS, has been accelerated, along with the checks. The fact of the matter is that we have clear checks: the passenger locator form must be completed, there are fines for non-compliance, and there is a requirement for self-isolation for arrivals. These measures and checks are in place, and they will be increased to protect public health.