BJCP 17A
An ale of respectable alcoholic strength, traditionally bottled-conditioned and cellared. Can have a wide range of interpretations, but most will have varying degrees of malty richness, late hops and bitterness, fruity esters, and alcohol warmth. Judges should allow for a significant range in character, as long as the beer is within the alcohol strength range and has an interesting 'British' character, it likely fits the style. The malt and adjunct flavors and intensity can vary widely, but any combination should result in an agreeable palate experience.
As an entry category more than a style, the strength and character of examples can vary widely. Fits in the style space between normal gravity beers (strong bitters, brown ales, English porters) and barleywines. Can include pale malty-hoppy beers, English winter warmers, strong dark milds, smaller Burton ales, and other unique beers in the general gravity range that don't fit other categories. Traditionally a bottle-conditioned product suitable for cellaring.
Fuller's 1845, Harvey's Elizabethan Ale, J.W. Lees Manchester Star, Samuel Smith's Winter Welcome, Young's Winter Warmer