Channel 4 have released some information on the "successful" test and trace system.
https://www.channel4.com/news/reveal...channel-4-news
If I understand that correctly, about 40% of people testing positive have signed up for the test and trace system. And the tracing teams have contacted about 36% of the 'leads they've been given.
So 25,000 tracers have managed to contact 1,700 people in four days. One contact for every 14 tracers. By my reckoning that will be somewhere in the order of £8 million in wages or £4,700 per contact made. How many of those contacts had the virus or changed their behaviour as a result of the contact is anyone's guess.
And this is what Matt Hancock calls a success.