The daily reported cases are an under-reporting and that is stated on the media. Here in the Office For National Statistics carries out a weekly general survey which is reported widely and this always gives a much higher rate of infection which will be nearer the correct figure. The latest figures are below. Estimated rate in England is one in fifteen people have the virus.

https://www.ons.gov.uk/peoplepopulationandcommunity/healthandsocialcare/conditionsanddiseases/bulletins/coronaviruscovid19infect