St. Kilda is an isolated archipelago which contains the westernmost islands of the Outer Hebrides of Scotland. The entire archipelago is owned by the National Trust for Scotland. Clive Feigenbaum produced labels between 1968 and 1971 in the name of Saint Kilda. There is no evidence of usage of them as British Locals. One article stated that the National Trust issued the 1968 Birds set but there is no evidence that they did.
St Kilda wren (Troglodytes troglodytes hirtensis) - Produced in the name of the National Trust for Scotland
