Everyone over the age of five who is showing symptoms of coronavirus can now be tested in the UK.
Health Secretary Matt Hancock announced the latest move today while appearing in the House of Commons.
Mr Hancock told MPs: "We are expanding eligibility for testing further than ever before.
"Yesterday we conducted 100,678 tests. Every day we are creating more capacity and that means more people can be tested, and the virus has fewer places to hide.
"Today, I can announce to the House that everyone aged five and over with symptoms is now eligible for a test.
"That applies right across the UK in all four nations from now."
It comes as the NHS officially added new symptoms to look out for in its official guidance.
A loss of smell or taste will now be listed alongside fever and cough as the main symptoms of Covid-19.
Anyone suffering loss of taste or smell, or a noticeable change, should now self-isolate for seven days to reduce the risk of spreading the infection, England’s deputy chief medical officer, Professor Jonathan Van-Tam said.
If the symptomatic person lives with others, they should stay at home for seven days, while all other household members should stay home for 14 days even if they do not have symptoms.
Anyone with any of these symptoms can book a test by visiting nhs.uk/coronavirus.