Deloitte runs testing centers but is not required to report cases to health service or local councils

Examples
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The UK Government outsourced some of the testing centre work to Deloitte. The contract states that Deloit does not have to share data of positive cases with the UK health authority Public Health England nor to local government authorities. This prevented data sharing that was arguably essential to public health surveillance. 

https://twitter.com/johnharris1969/status/1278259630628618241 
https://www.theguardian.com/world/2020/jul/01/why-is-there-a-delay-in-sharing-covid-19-test-data-with-english-councils
https://www.thebureauinvestigates.com/blog/2020-07-03/central-control-why-has-the-government-withheld-testing-data-from-councils

https://www.reuters.com/investigates/special-report/health-coronavirus-britain-tracing/

Writer: Reuters: Stephen Grey, Andrew Macaskill, Ryan Mcneill, Steve Stecklow, Tommy Wilkes