I flew into Heathrow this morning. And while I wait for hotel room, I thought I'd give a report.
I flew American Airlines from JFK and for some reason AA's flights from NYC use Terminal 5 while all other American flights use Terminal 3.
AA asks its passengers to use the Verify app to upload their CDC certificate and for the UK the PLF. It's loaded into your reservation. If you use the Verify app, you can get your boarding pass online. Otherwise you have to check in at the airport. I was only asked to show my boarding pass and passport at the gate.
My flight arrived just after 6 AM and there was only one other flight arriving around the same time. As a U.S. passport holder I was ushered into the e-gates. My passport has a computer chip problem so I can't use the e-gates and have to see someone. There is a desk next to them for this purpose. Usually there are one or two people working that area. Today there were five. Even though there were about a dozen people ahead of me, I was out in about 5 minutes. (The woman I dealt with was very nice.) All I had to show was my passport.
It was about 25 minutes from walking off he plane to getting on the underground. We landed at the B terminal of Terminal 5.
The sad part was that even though passengers are required to wear masks on the Undergound, only about 1 out of every 4 passengers was wearing a mask. I wore mine.