In a large bowl mix the bacon with the eggs, tomatoes and blue cheese crumbles. Toss gently.
Arrange the iceberg wedges on a serving plate and top with the mixture.
Make the dressing by whisking the Greek yogurt with the sour cream, mayonnaise, Worcestershire sauce, blue cheese crumbles and vinegar. Season with salt and pepper to taste. Drizzle the dressing over the wedges and serve at room temperature.