The very first Bearded Seal record was a specimen captured ay Burnham Overy on the east coast in 1892. 1956 record from Foula Gordon Coward rang me from Braunton, North Devon, to explain that my records of Bearded Seal, Erignathus barbatus , from the Shetlands and elsewhere did not include one he discovered in the Shetland Isles in 1956. The first record on the Shetland Wildlife pages was from 1977, but now the old record has been included. At the time it was not realised how unusual this Bearded Seal discovery was, but it is still the first record for Scotland, although in 1892, one was washed up on the east coast of England at Burnham Overy. This seal is as you mention an Arctic seal quite common on Spitsbergen.
Animals reaching the coast of Norway are usually juveniles.
In Norway it is often called Blue Seal , because of the coat looks blue when the animal is dry. If the size estimate is correct, it could only be mistaken for the Grey Seal, Halichoerus grypus . It dives down to 130 metres. They can reach an ages of 30 years. Because of the scattered occurrence it has never had an great commercial importance.