Buchanan’s is a brand of Scotch whisky produced by Diageo in Scotland.
In 1898, James Buchanan was given the Royal Warrant to supply the Royal Household with Buchanan’s Whisky to Queen Victoria and the Prince of Wales.
The company joined Distillers Company in 1925. Distillers was acquired by Guinness in 1986, and Guinness merged with Grand Metropolitan to form Diageo in 1997.