Scribbles - that is hard - I too have just lost my OH, but we had the funeral 2 weeks ago and everyone who wanted to come was able to. This must feel very hard for you, but I would just say two things - the people who cannot come will be with you in their hearts and that is what counts; and, to be honest, my OHS's funeral passed me by in a sort of daze - I remember almost nothing of it. It is just a blank. I know that you will be remembering him, as will all those who loved him, and the presence of lots of people is not what counts just now - what matters is that he will be remembered 
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As to the imposition of self-isolation for those who are elderly or in at risk categories: I think this makes absolute sense. It is this group of people who are most at risk, and also more likely to need hospitalisation. If they can keep themselves to themselves for several weeks, they will not be in danger of infection; and while they are out of circulation lots of young and fitter people will get it and, when the at-riskers re-emerge, there will be less of the bug around to infect them, and the hospital services will have more capacity if they need medical care. It makes complete sense.
Of course it will cause difficulties for those of us who might nee to stay out of circulation; but it is that or risk death from a serious illness. It is a no-brainer. There will be those for whom it is harder than most - e.g. those caring for an elderly relative at home, or whose partners are not in the at-risk category. But for many it is not hard to do. I am already semi-self-isolating: avoiding busy places, cancelling my singing group, lots of hand-washing etc. But I go for a walk (sometimes two) every day - I am lucky in that there are few people around where I live, and can see that this might be harder for those in more populated places. I have a garden and will be out in that when possible.
I think that, where possible, we need to try and be positive, knowing that it is the right policy, and to find positive things to do. My plans are to get back to writing poetry (been on hold while caring for OH), finish a quilt that has been waiting for some years, do some house-clearing ready for planned move later this year, practice the recorder and piano, enjoy exploring Netflix - this is an unexpected hiatus in normal routine and the only thing to do is to look at how this can be used positively.
It is a pain for sure; but we can only try and approach it with a positive heart.
One of the good spin-offs already is that a couple in Cornwall have printed cards to pop through everyone's doors, saying who they are and how they can be contacted and asking if there is anything they can do to help - boxes to tick for such things as phoning up for a chat, getting medicines, getting shopping etc. Let us hope that this will be a chance for the best in people to come to the fore.
