Covid tests that you can take when in the US to allow you to fly back to the United Kingdom

I will keep this updated on the website: 

" I got this at CVS. I think it was $39 and the video appt was $15.  I used it to go to the UK. It's video observed and sync with your iPhone so you get results in 15 mins and an email PDF version" via @AngNYCoutspoken https://twitter.com/angnycoutspoken/status/1467296575353413636?s=21