What is the difference between an old English bulldog and a English bulldog?

Olde English Bulldogs look more like American bulldogs than English bulldogs: they are larger, leaner, have long uncurled tails, are mostly unwrinkled and are not or are not to the same degree as brachycephalic (meaning having a short snout) as their English counterparts. English bulldogs in contrast, are short, stout, stocky/heavily built, brachycephalic, wrinkly, and are low energy.