In today's Test and Trace figures, they've decided to change the way they count the proportion of contacts reached - meaning we can't make any comparisons with previous figures.

Here's what I've filed to the @PA wire.
Contacts reached under Test and Trace had been flatlining around 60% for six weeks - until they changed the method of counting.
They've done it again.
The way Test and Trace counts the proportion of contacts reached has now been changed twice in as many weeks.

Matt Hancock described these changes as "improvements".
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