We were always told that one of the keys to lifting the lockdown was having an effective test and trace operation in place.

The lockdown has now been eased, so is test and trace up and running? Matt Hancock said today it was “working well”.

But this programme has exclusively seen a leaked copy of data showing how it was operating in its first few days.

It shows less than half the contacts reported to NHS Test and trace by those who had tested positive had actually been reached by contact tracers.

Revealed: Covid test and trace data in England leaked to Channel 4 News