Ok, so here's my story. Flew to London on 09/08/2021 and returned 09/17/2021. Don't even worry about the Day 8 test, no longer required. Just remember, day 0 is the day you arrive, so I arrived on Thursday and Day 2 was Saturday.
I ordered my test through
www.qured.com and had it shipped to the hotel, it arrived on Friday ( day 1 ). Make sure to order it about 48 hours be departure. After testing, if ordered through Qured, you place it in a
Royal Priority Box, most are marked COVID Test. Took my test my on Saturday morning, mailed it off same day and didn't even get the results until late Tuesday night. You are given a confirmation number when you order the test and, yes, this number must put on your Travel Locator Form.
Wednesday rolled around and it was time for another test to fly back. For my return test, I ordered the Abbott Labs test ( recommended by United ) and took them with me. If you use these test, make sure you have a computer or tablet, because the testing is done over Zoom and only takes about 20 minutes and you're done. Also order at least 2 per person in case something happens.
To be honest, I was worried about the whole ordering and testing process, but looking back, it wasn't that big of a deal. I hope this helps some.
ETA: You must take a PCR only test a few days before you depart. England will not accept any rapid test.
ETA2: If you can make it out to Chiswick, west London, go eat at D-Grande Tex-Mex, Aggie Owned and really good.
“If I had asked people what they wanted, they would have said faster horses.” -Henry Ford
#FJB