RARE Class 37s on test train in the Scottish highlands! 

In this video we see two class 37s on a UTU test train in the Scottish highlands with locomotives being 37116 & 37254.
This used to be quite common in the highlands, but with HSTs taking over the test trains in recent years class 37s on these test trains have become increasingly rarer in the highlands of Scotland.
We also see a variety of other trains including things like the Royal Scotsman, some LNER and ScotRail services, and a Class 43 hauled test train.
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