Ers hynny, mae’r rheoliadau hyn wedi’u hadolygu’n gyson ac mae nifer o newidiadau wedi’u gwneud i’r rhestr o wledydd a thiriogaethau sydd wedi’u heithrio. O ran y rhestr o wledydd a thiriogaethau sydd wedi’u heithrio o’r gofynion cwarantin:ar 11 Gorffennaf, tynnwyd Serbia o’r rhestr;ar 26 Gorffennaf, tynnwyd Sbaen a'i hynysoedd o’r rhestr;ar 30 Gorffennaf, ychwanegwyd Latfia, Estonia, Slofacia, Slofenia a Saint Vincent a’r Grenadines;Ar 8 Awst, tynnwyd Andorra, y Bahamas a Gwlad Belg o’r rhestr ac ychwanegwyd Brunei a Malaysia.
Since then these regulations have been kept under review and a number of changes to the list of exempt countries and territories have been made. In relation to the list of countries and territories exempted from the quarantine requirements:on 11 July Serbia was removed;on 26 July Spain and its islands was removed;on 30 July Latvia, Estonia, Slovakia, Slovenia and St Vincent and the Grenadines were added;on 8 August Andorra, the Bahamas and Belgium were removed from list and Brunei and Malaysia were added.