All 20 players and 12 members of the management personnel in Pakistan's touring contingent have returned negative results for Covid-19 tests since arriving in Britain.
The latest round of tests means that the players and accompanying backroom staff have cleared their third coronavirus test in just over a week.
Following the yielding of the negative results, the players have been permitted to train in Worcester where they are undergoing a two-week isolation period.
Additionally, left-arm spinner Zafar Gohar and team physiotherapist Cliffe Deacon have also cleared the Covid-19 test as they join the team after a slight delay.
Gohar, who has represented Pakistan in a solitary ODI, joined the squad from England and will only assist the side for pre-series preparations. Meanwhile, Deacon linked up with the Pakistan team after flying to England from South Africa.
18 players part of the original 29-member squad were able to retain their spot as they recorded consecutive negative tests while Rohail Nazir and Musa Khan were added to the team as well.
However, Pakistan will likely be bolstered by the imminent inclusion of six of the 10 players who had tested positive since they returned two negative results subsequently.
Mohammad Hafeez, Wahab Riaz, Mohammad Hasnain, Shadab Khan, Mohammad Rizwan and Fakhar Zaman are now eligible for a call-up and the PCB is working on suitable travel plans to ensure their arrival in England.
Pakistan are scheduled to play three Tests and as many T20Is against England with all the fixtures set to be played behind closed doors.
The touring party will shift to Derbyshire's Incora County Ground on July 13 once their mandatory quarantine is over and they will then engage in two four-day internal warm-up matches before the first Test.