If you compare the UK to Spain and Italy then they both saw the curve starting to flatten between 2 and 3 weeks in lockdown. However the lockdown regulation in the UK are less stringent then in both those countries, which will have an impact.
My reply to ATNotts was based on his assumption that we are far from out of the woods yet. With only barely three weeks in lockdown it is difficult to draw a conclusion if cases will start to fall in the next couple of days.
Just to add that I only fly airplanes for a living so far from an expert on Covid-19!