same way for serbia ten days or so ago, because we saw a spike in the number of cases. for your viewers, thinking about whether they go on holiday, we want to keep these exemptions in place but we will not keep them in place if it isn't safe. cani keep them in place if it isn't safe. can i ask you, health secretary, there is a lot of talk about second wave and i know we are careful with our language around this, but what will be the indicators? they know you are looking at europe and seeing a second wave there, what would be the key indicator that we may have reached that point in the uk? there area reached that point in the uk? there are a whole range of indicators. the number of people who test positive is important, so is the percentage of people who test positive. so of course of the surveys we have. we have some of the best surveys going, including from the office of national statistics. we also look, we look at hospital admissions, although thankfully that has lagged. that doesn't happen as early, obviously, the first thing you see is the number of people who test