Boris Johnson claimed the UK's test-and-trace system was 'as good as or better than anywhere else in the world'. 
The prime minister was confronted on this statement by the leader of the Labour party, Sir Keir Starmer, who said the 'rhetoric of a stunning success is obviously not true'.
In June, an independent group of scientist said England's test-and-trace system was not fit for purpose and would not be enough to pick up 80% of the contacts of people with the virus, which they suggest is needed to prevent the infection rate rising
UK coronavirus live: test and trace 'as good as or better than anywhere in world', claims Boris Johnson
Infection rate in England fell sharply month before lockdown lifted