Preheat the oven to 180 degrees C. Sprinkle the bread cubes with half the olive oil and salt and pepper. Place in the oven on a baking tray and toast, turning once, until golden, about 15 minutes. Briefly rub the cubes with the unpeeled garlic.
Crush the 3 peeled cloves of garlic into a bowl and add about 1/2 teaspoon salt. With a fork, crush the anchovies in to the garlic. Add the Worcestershire, vinegar and pepper to taste. Start whisking. While whisking, drizzle in the remaining olive oil to make a thick dressing.
Arrange the lettuce leaves and toasted bread in a salad bowl. Crack in the soft boiled egg, add the dressing and toss to coat. Serve garnished with Parmesan.