So after 5 hours in A&E, it turned out nothing was broken, a nice doctor glued my forehead back together and DH drove us home.
I posted a short blog on my running website, https://www.fetcheveryone.com/, saying how nice it was of the passers by to wait with me.
And one of the comments on the blog was from the woman of the couple, who it turned out I knew slightly online, as a local cyclist, but didn't know in person. How lovely is that!
I was able to thank her properly via DM.
2/3