Barclays is a brand by JG Distillers Group (founded by Colin Barclay in 1991) in East Kilbride, Scotland. They export single malt, blended malt and blended whisky to 40 different markets overseas and are expanding, according to this story by Daily Record. Barclays Extra Special Blended Scotch Whisky is one of their best selling products, along with brands such as Highland Chief and McIvor.
30th December 2016http://www.whiskyrant.com/barclays-blended-scotch-whisky-review/
Oak is the main note. Some berry kind of bitterness.