I'm brewing my first barleywine in a few days, and thought I'd add to the discussion. I'm planning it to be a hybrid English/American BW:
17.75# Thomas Fawcett Maris Otter
0.75# British medium and extra dark crystal malts, 50/50 mix
DME and cane sugar, if necessary, to reach 1.090
Mash at 154...