Preheat the oven to 400°F (200°C) for shrimp.
Melt butter in a medium pan over medium-high heat.
Sauté onion and garlic for 1 min.
Add stock, Worcestershire, lemon juice, herbs, cayenne, and salt.
Cook, mix well, 3 min.
Stir in cream, simmer for 10 min.
Lower heat when sauce bubbles, cook till slightly thick.
Set aside the sauce, turn off the heat.
Mix paprika, and spices in a small bowl.
Place 500g of cleaned shrimp on a baking tray.
Season, flip, brush with butter, and bake for 7-8 min.
Plate rice in the centre, and pour sauce around.
Add shrimp on top, sprinkle diced onion and spring onion.
Serve promptly, and enjoy the dish.