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Have faith, Bill! It would be an odd place for a Common Gull, which rarely visit cliffs. Legs are not too long at all, and all other features for Kittiwake are just as you describe. No Common Gull would have those dark legs.
My Flickr photos...
Thanks for the ID confirmation.
Just taking my first tentative steps into sea birds. I am fortunate in that I do not fear of making a fool of myself.
Lat/Lng: 56.9097, -2.1986
OS grid ref: NO880798