If people have symptoms of coronavirus, they should self-isolate and get a test. We have heard examples—of course we have—of people having challenges getting tests. I am very glad, though, that in two of the cases that my hon. Friend outlined, home tests have been sent. In the third case, there was clearly a technical problem, given that the barcode is emailed to people who supply their email address. People with covid symptoms need to self-isolate and then, if somebody gets a positive test result, their households also have to self-isolate. These policies are absolutely critical to the control of the virus.