Coronavirus cases in the UK have jumped over the past seven days from 590 on March 12 to 3,269 on March 19 - a more than fivefold increase.
The spread of the virus around the UK has not been consistent, however. In England, the sharpest rises have been concentrated mostly in London boroughs and in counties across the South East.
As of March 12, no local authority area in England had recorded more than 20 cases of the virus, with Kensington & Chelsea (19), Hertfordshire (18), Oxfordshire (17) and Hampshire (15) topping the list.
By March 19, Hampshire had jumped from 15 to 87 - the highest number for any area in England - and Hertfordshire from 18 to 52.