Dense clumps in damp areas but not in water. Close up on other picture
No interactions present.
This is definitely not Sphagnum, and I am sure it is not even a moss. It will be very difficult to put a name to it from the vegetative features in the pic.
recording wildlife with The Recorder's Year on www.hbrg.org.uk/TRY.html.
Lat/Lng: 51.2, -0.8
OS grid ref: SU8955