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F. vesiculosus often lacks bladders, but there is one bladder visible in the photograph (lower right) - enough to rule out F. spiralis.
The structures at the ends of the fronds are not bladders; they are conceptacles (sexual structures). There is a lot of variation in Fucus, sometimes at least due to hybridisation, but in F. spiralis they are generally ovoid, with a distinct, frilly margin. In F. vesiculosus they are pointed and simply have keeled margins.
To me, this is a typical representation of a common form of F. vesiculosus.
Lat/Lng: 50.1, -5.1
OS grid ref: SW8032