A leading Covid expert has told people to assume they have coronavirus if they have two "telltale" symptoms.
Professor Tim Spector, founder of the Covid Zoe app, said that feeling tired - or fatigue - in the morning even after a good night's sleep might be a symptom of the virus.
A sore throat could also be a sign you're infected, as he added that the symptom is more commonly reported in people who have coronavirus rather than the common cold. Scientists are worried there will be an autumn wave of Covid, and cases have been rising since September.