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I think you might have a 5-Bearded Rockling there. The overall appearance is quite like a 5 beard and although its not totally clear there appears to be another pair of barbels on the upper lip beneath the top pair.
Did you count the barbels or photograph the mouth area? Shore rockling like 3-bearded has only 2 barbels on the upper lip, as you are probably well aware.
Did count the barbels at the time and new what the fish was but have not got round to looking at photos until today and could not remember. Have zoomed in on another photo and you are quite right there are additional barbels so it is a Five Bearded, please feel free to correct my identification.
Go ahead and put it up yourself ABK.
Lat/Lng: 54.06411, -4.66143
OS grid ref: SC259664