There are two interpretations of London Broil. One describes it as the cut of meat (top round, lean cut) while the other is the method of cooking (with the word "broil" in it, using high heat over a short period of time). Which is the correct one?
An attempt on London Broil was made, adapted from this roast beef recipe.
To make a much easier equally delicious beef salad bowl, here's a short-cut is to use ready-cooked beef e.g. this Sous Vide Sliced Grass-Fed Beef Sirloin from Cuisine Solution, sold at Costco. Simpler, hassle-free, and delicious.

Make a batch of roast beef, have different meal variations and enjoy steak salad for days.