I had a fairly long ramble on that Andrew Marr comment but decided expressing what I meant would be far too long, so I will stick to the heart of the point.

In Parliament today, under the 'cross examination' of the paper by Keir Starmer, Boris Johnson is likely to make statements that dwarf the confusion of last night's little chat and accelerate the death rate. We will know in something between two and three weeks. If the death rate has risen substantially by then, it will be due to the decisions and statements on these two days. They will not be due to Starmer's interrogation, even though the statements Boris makes will be in direct response to those questions.

The rate will inevitably rise somewhat under any relaxation of lockdown. So let us set an arbitrary definition of 'substantial': I would regard to 33% more than yesterday's number of deaths (465 + 33%) as substantial.