With the obvious cycling incident up in the Lakes today it brings home how important it is to have some sort of personal ID when out riding solo.
I know it's a personal choice etc, + maybe it's patronising but make sure you get some + carry it with you. If not for yourself then for family friends etc.
In fact on the subject of solo off-road riding in remote places or forests/woodland always carry a perry whistle.
Road ID is a good source. I have dog tag for cycling + wrist id for running.