Put the minced beef, garlic, red onion, chilli and parsley in a large bowl. Add the Worcestershire sauce, beaten egg and a little salt and pepper and mix well.
Heat a griddle pan. Using your hands, divide the minced meat mixture into 4 and shape into burgers. Cook the burgers in the griddle pan for 3 minutes on each side for rare, 5 minutes for medium or 7 minutes for well done.
Place the roll halves under a preheated hot grill and toast on one side. Fill each bun with some hot salad leaves, some tomato slices and a griddled burger, garnish with snipped chives and serve with your favourite relish and griddled new potatoes.