That seems low but training & quality assurance and retests may be quite intensive at this stage
It would be good practise to be quality assuring v early on that the swabs are from the sites needed.
nature.com/articles/d4158…
It is much better to spot training issues early and likely misses and retest and check all early in than after a month of tests.
One step back & correct is better than 30 steps back and correct
However @CMO_England it would be helpful if there could be not only a daily notification, but also a table of the number of tests per day historically