Shrimp Cocktail

1 pound cooked shrimp
1 cup prepared seafood cocktail sauce (mild or spicy depending on your taste)
2 teaspoon prepared red horseradish
4 teaspoons Worcestershire sauce
1/2 cup ketchup
juice from 1/2 lemon
4 stalks celery, finely chopped

Combine all ingredients and serve chilled.