By some way, Scotland has the lowest infection rate per million population and the second lowest death rate:

Scotland has one of the highest testing rates:

Of great significance but not recorded for comparison is the success in contact tracing. Scotland’s teams are contacting more than 99% while the average in England it is only 75.5%

https://talkingupscotlandtwo.com/2020/08/19/latest-scotlands-test-and-protect-teams-contact-trace-99-7/

https://www.theguardian.com/world/live/2020/aug/27/uk-coronavirus-live-people-on-low-pay-to-get-covid-isolation-payment?page=with:block-5f479b928f08767dd7f1044e#block-5f479b928f08767dd7f1044e