VisitScotland has stripped a guesthouse of its recommended status after its owner refused to let a gay couple have a double room.
And the tourist authority has warned that it would be prepared to take the same action against any other hotelier who acts in the same way.
The move came after Tom Forrest, owner of the Cromasaig guest house in Kinlochewe, Wester Ross, refused to let Stephen Nock, 34, and his partner book a double room and branded the couple "sexual deviants".
Nock and his partner of five years were told they could not stay in a double room in the guest house because their relationship was "unnatural".
A spokesman for VisitScotland said Forrest's "atrocious" comments were damaging to the image of Scotland as a welcoming destination.
"If anybody else was to do this sort of thing, then they would face the same consequences," he added.
by Nic Paton
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