Make the dressing: Combine all the dressing ingredients and mix well. Refrigerate until ready to serve.
Make the burgers: Preheat an outdoor grill to medium-high.
In a bowl, combine the beef, Worcestershire sauce, egg, salt, and pepper. Shape into four patties.
Grill the patties for about 3 minutes per side for medium doneness.
Place each patty on a bun and top with bacon, tomato, lettuce, and a generous dollop of dressing. Close the burgers with the top bun half and serve immediately.