I only caught the tail end of the briefing so I'm not sure if there were details of how to apply or the kind of work required, but:
If you had a fit young person in your household, currently not working because of the crisis, would you want them to do it or prefer to keep your household as safe as possible by not letting anyone be out?
We have no additional risk and DS could do with a sense of purpose and something to put on his CV! The rest of us are working from home.
I'm usually very much in favour of doing your bit....