British military personnel will be involved in 92 of the 96 mobile coronavirus testing units by early May.
The mobile facilities, which have the capacity to test 300 people each day across the UK, began to be rolled out by service members last week.
The mobile units, developed by the military, operate out of drive through sites to help access those who are isolated communities such as care homes.
British Army soldiers and Royal Marines were operating facilities across the country over the weekend, as well as personnel training to operate the pop-up sites.
Specially trained Armed Forces personnel manning the units collect swabs, before sending them back to mega-labs for processing.
Results are returned in 48 hours.
There are currently 17 mobile units operational, but the Government says it still expects to have 96 up and running by the beginning of May.
While a number 10 spokesperson repeated today that the Government is still pushing to meet its 100,000 tests-a-day target by the end of the month, UK test capacity currently sits at 73,400.
A total of 1,150 troops are currently involved in testing across the country.
Hundreds more have been deployed to support NHS Nightingale Hospitals in Harrogate and Bristol.
A Number 10 spokesperson said "The military have said they have a significant number of personnel available to support the Coronavirus response. We are grateful for all that they continue to do."
The current known mobile unit locations are: Torquay, Hereford, Boston, Salisbury, Bishop Auckland, Barnet, Northampton, Grimsby, Skegness, Blackpool, Macclesfield, Ramsgate, Harwich, Barnsley, Grantham and Kendall.
Cover image: MOD.