There may be more than one species here. I know very little about seaweeds. It would be interesting to know whether these are edible.
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I have never seen reference to eating Fucus spiralis. Fucus serratus (a close relative) is eatable, but considered poor to eat. It has a high iodine content that makes it taste bitter.
Lat/Lng: 57.19858, -6.00286
OS grid ref: NG583190