Rough chop the vegetables and add to a blender, for a chunkier texture process in a food processor instead of a blender.
Squeeze the water from the French bread cubes and add to a blender along with the vegetables. Add olive oil and vinegar and blend to a puree. Season with salt, pepper (if needed), lemon juice, zest and Worcestershire sauce. Refrigerate over night for best flavor.
To serve, check for seasoning again before pouring into a bowl. Garnish the top of the soup with the chopped avocado and shrimp if using.
Goes very well with a nicely toasted slice of cheesy garlic bread.