First Minister, just on the back of that, quickly, I'd like to say, moving forward now, we need to make sure that the Government—it's absolutely paramount that they're forthcoming with any risk assessments on any proposals such as the ozone machines.

First Minister, on safety, due to the massive disruptions over the last year, our emphasis needs to be on keeping children in the classroom as much as possible to prevent further disruption to their education. Headteachers have, however, and constituents raised understandable concerns over children advised to still attend schools when they have tested negative on a lateral flow test but a member of their household has tested positive for COVID-19. We obviously need to ensure schools are a safe environment and to help stop the spread, so can you reassure headteachers and families why your Government's advice is as it is on this and whether you're looking to make any changes to Government advice in this regard?