Britain is aiming to increase the number of tests for coronavirus to 25,000 a day by the middle of the month from its present capacity of 12,750 a day, housing minister Robert Jenrick told Sky News on Wednesday.
Britain is beginning to test medical staff in additional to patients in hospital, but critics have said it is not expanding testing fast enough or wide enough.
UK fight against Coronavirus
Jenrick said 8,240 individuals were tested on Monday and more than 900 health workers were tested over the weekend.
"We now have capacity to test 12,750 people every day, we were focusing the capacity that we had on people in critical conditions, which was on medical advice," he said.
"We think within days we will be able to go from our present capacity of 12,750 to 15,000, so that's a significant increase but still not as far as we'd like it to be, then mid-April is when we expect to be at 25,000."