BJCP 19B
The richest and strongest of the English Ales. A showcase of malty richness and complex, intense flavors. The character of these ales can change significantly over time; both young and old versions should be appreciated for what they are. The malt profile can vary widely; not all examples will have all possible flavors or aromas.
Although often a hoppy beer, the English Barleywine places less emphasis on hop character than the American Barleywine and features English hops. English versions can be darker, maltier, fruitier, and feature richer specialty malt flavors than American Barleywines.
Thomas Hardy's Ale, Burton Bridge Thomas Sykes Old Ale, J.W. Lee's Vintage Harvest Ale, Robinson's Old Tom, Fuller's Golden Pride, AleSmith Old Numbskull, Young's Old Nick (unusual in its 7.2% ABV), Whitbread Gold Label, Old Dominion Millenium, North Coast Old Stock Ale (when aged), Weyerbacher Blithering Idiot
You can view the complete style details on the BJCP website. The 2008 style guide is obsolete but there is a similar 2015 style that you can view below...
OG: 1.080-1.120
FG: 1.018-1.030
IBU: 35-70
SRM: 8.0-22.0
ABV: 8.0-12.0%