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Who brewed Gordon Highland Scotch Ale in the 1950's? Whitbread include it on the George Younger (of Alloa) page in their Gravity Book. As you can see below:

Barm correctly stated that the beer was later brewed by the successor to the other Younger (William), Scottish & Newcastle. George Younger belonged to the other large Scottish brewing group, Bass/Tennents. How could the brand have ended up with S & N?

A very good question, for which I don't have an answer. Did the Whitbread just get their Youngers in a twist?