In these days of pandemic, there is a common enemy that should unite both sides

I agree there is a lot of unhelpful argument. But in fighting the common virus, it is perfectly legitimate for the left to be pointing out how far below the 100,000 promised tests we are and to refuse have the narrative changed to be about the capacity to test rather than the number of tests carried out. If that spurs the government on to do more things like the 'pop-up' test centres that is a good thing.

I think we need to hear rather more what these pop-up testing centres are, and how many of them there are.   I would be looking to see sufficient of them so that every hospital has one in the car park at least once a week, so the NHS staff can be tested weekly. Two or three pop ups for the whole country would be simply PR, but enough to carry out weekly testing of all NHS staff is a minimum moves beyond PR into something worth while. Once than minimum has been reached we should aim to test all NHS and care home workers in short order: if the end of April is the NHS, then before the end of May for all NHS and care homes, for example.