I’m lucky enough to be a member of the same writing group and have a story in the same collection that this is from, Unthology 5. Two great reasons to check it out: http://www.unthankbooks.com/unthology.html
TSFG member Charlie has a story ‘Fresh Water’ in the prestigious anthology, alongside such luminaries as Hilary Mantel and Helen Simpson.
The story originally appeared in Unthology 5.
Out of the five ‘Best British Short Stories’ anthologies so far, TSFG members have appeared in four of them.