Ok, just finished and realised I have 1km to walk back to my home. I felt like the last two miles were quite painful and I was dragging myself, which is ok as I felt exactly the same when I ran the 18 miler at the 16 mile point.
I am looking forward to a lot of food and a nice bath. I can relax now for a couple of days.
Last point just looked at my step count and it says 36,000 at the point of finishing, which is hilarious, I remember posting a photo of my watch after recovering from COVID with the same step count and feeling really proud after a return hike.