do the COVID-19 testing providers at Heathrow satisfy the 2 day testing requirement?

do the COVID-19 testing providers at Heathrow satisfy the 2 day testing requirement? - Man in White Thobe Standing Near Table

https://www.heathrow.com/at-the-airport/fly-safe/covid-19-test mentions companies that do COVID-19 testing at Heathrow but I'm not seeing those providers at https://www.gov.uk/find-travel-test-provider . Does the UK government accept the test results provided by the testing providers at Heathrow?

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UK: Heathrow airport calls for the removal of testing for all vaccinated travelers | English News

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