Unlike the SNP to allow councils that level of autonomy.
Ive been doing regular lat flow testing just to be a but safe and I took a lat flow 2 Fridays ago, negative, again on the Monday negative, missus developed symptoms (lack of taste) on the Tuesday so did a PCR on the Tuesday, positive. Tested again with lat flow on the Friday to see what it said, also negative.
Missus is a chemist and explained that the PCR amplifies the protein when it's detected so it will show a result whereas a lat flow requires a threshold value to be reached before the indicator line discolours. So PCR will pick up a far smaller virus amount.
Either that or the lat flow are all as useful as Kasper Sloth.