In a sturdy, medium sized bowl, whisk together soy sauce, brown sugar, garlic, honey, olive oil and ginger until well combined.
Cut slits across the London broil - 4-5 of them - to let the marinade really soak in and then put the meat into a sealable bag and pour in soy mixture. Seal the bag and let sit for 1-2 hours, turning once halfway through.
Remove the London broil from the bag and discard marinade. Place on a broiler pan and into the oven. Set broiler to high and cook for 8-10 minutes, to desired doneness. Slice thinly, against the grain, and serve immediately
Recipe by Sarah's Cucina Bella at http://sarahscucinabella.com/2008/01/03/spectacular-ginger-soy-london-broil/