Stems about 15mm. Leaves pointy 3mm with a very long excurrent hair 2-3mm long, dark red nerve. On a big log (top, centre in the second picture)
No interactions present.
Not sure about the significance of the capsules. I would check the hair points for small teeth, though (you'll need at least x20, preferably higher, as they are very small). S. intermedia should have them
Backlit with x20 and I can see very small teeth on the hairs
Lat/Lng: 51.09912, 0.04058
OS grid ref: TQ429352