As usual the UK government does everything too late and believes it is the best at everything.
And why a 'trial run' when one has successfully been run in Iceland.
So successful (along with testing, which hasn't been solved here) that the country effectively came out of lockdown yesterday.
So why don't we adopt their tested and proven app?
Because unlike the system being developed for the UK, it doesn't have a central database!
(created by the team behind the leave campaign. For them privacy and personal data are words that do not exist!)
And of course when the EU/EEA system becomes universal, then since the UK will have a different/non-aligned app it another piece in the isolationalist jigsaw.
Although of course the US will get the data. Now why would they want to access NHS data one wonders?
Whilst the app is a useful tool for the stated aim, I for one shall not be downloading this piece of spyware!