Combine soy sauce, Worcestershire sauce, honey, and sesame oil in a shallow dish.
Add steak to marinade, cover and let sit 1 hour, turning halfway through.
Combine all sauce ingredients and whisk together in a small bowl.
Prepare the lettuce wrap elements: gently pull apart the butter lettuce head into individual leaves and place on a platter. Arrange sliced cucumber, radishes, herbs, scallions and chiles on a serving plate.
Grill the steak, 5-6 minutes per side, until desired temperature.
Pull off the grill and let rest for 5 minutes, then slice into ¼-inch thick slices.
To serve, present the platter of steak, the lettuce wraps, sauce, and vegetables/herbs. Pass the platter family-style and let everyone build their own.
Notes
Pair with chilled Sandeman Founder's Reserve port on the rocks, with an orange twist.