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On this site: http://www.naturespot.org.uk/species/harts-tongue-thyme-moss , it says "All Plagiomnium species have greenish stems without red or brown pigments",
whereas the moss in my photo have brown stems.
Perhaps: Slender Mouse-tail Moss (Isothecium myosuroides)? or a species of aquatic moss?
I think you may be right and i was too hasty, however i dont think it is an aquatic moss or Isothecium myosuroides, the latter 'looks' denser and more compact and is branched whereas this looks to me to be an acrocarp.
I am more sure but not certain of this species, the BBS field guide entry can be found here: http://www.bbsfieldguide.org.uk/sites/default/files/pdfs/mosses/Mnium_ho... there is also a nice image of this species dry which in my opinion resembles yours fairly closely: http://www.nature-diary.co.uk/2008/01-21.htm
Let me know what you think and sorry for the hasty initial id!
No worries about initial id :)
But from looking at your links, my image definitely does seem to resemble Mnium hornum.
Thank you :)
Lat/Lng: 53.0034, -2.2716
OS grid ref: SJ818451