Looks like one of the West Highland line stations.
It is indeed - Loch Tat ... purely fictitious of course, and on show at TrainWest in Melksham's Christie Miller sports centre along with 19 other layouts yesterday
and today. For those of you who aren't to far from here, there's still time to come to
http://www.trainwest.org.uk/ TrainWest ... and make use of the free road transfers from Melksham or Chippenham Stations.