In fact, it's not an English item as far as anyone knows -- in England, 'London broil' doesn't actually mean anything. It's not a dish or a cut of meat either, but rather a type of cooking method ...
London broil steak isn't the most common preparation, so it's understandable if you don't know what type of wine to pair with ...
While originally made using the London Broil cut of beef, when that became hard to find, our family switched to using flank or skirt steak. In fact, I would argue my mom made it with flank steak ...
There's the London broil method, which involves marinating a lean cut of meat for a period of time before cooking it quickly (but never beyond medium, or it'll be too chewy). Some marinades ...