Reuters attempts to "fact-Check" this, and fails.
They admit in this case that the PCR can provide up to 93% false NEGATIVES. They attempt to debunk by switching the context from false negatives to false positives. Anyway they attempt to slice it; they are still confirming the PCR test for Sars Cov-2 is woefully inaccurate.
https://twitter.com/SkyNews/status/1308655561081225217
https://www.reuters.com/article/uk-factcheck-airport-idUSKBN27730G
LB