In a heavy saucepan or frying pan over a medium heat, sweat the garlic and onions in the oil until softened. Add the sherry, thyme and oregano, and season with salt and pepper. Cook for 2 minutes.
Stir in the cream and let the liquid reduce a bit. Add the prawns and cook for 2 minutes, but no longer.
Remove from the heat and serve immediately, sprinkled with the paprika and parsley