Well, if they have to travel to the UK for treatment, the WHO recommended that the two week self-quarantine guideline be dropped.
Tell that Uber driver at the airport, "Kind sir, please take me to the hospital, I have an inspection for my injection." And hopefully, the Uber driver won't dump you in Croydon and say, "No Leronlimab for you !!!"
Docklands used to be scary place when I used to frequent the UK. I hear it's pretty nice now. Amazing.