In a large skillet combine shrimp, Worcestershire, lemon juice, black peppers, Creole seasoning, and garlic and cook over moderately high heat until shrimp turn pink, about 1 minute on each side. Reduce heat to moderate and stir in butter, a few cubes at a time, stirring constantly and adding more only when butter is melted. Remove skillet from heat. Place shrimp in a bowl and pour sauce over top.