Mediterranean Fish Casserole

1 1/2 lb/750g shelled and de-veined raw king prawns/jumbo shrimp 1 1/2 lb/750g raw hake fillet cut into roughly 2"/5cm square pieces 3 cloves garlic ,[...]

700 g flat fish fillets (1 1/2 pounds, plaice, sole etc) 1/2 lemon, juice of 1/2 teaspoon salt pepper 125 g cream cheese with herbs (4 1/2 ounces) 1 teaspoon[...]

2 tablespoons olive oil 1 lb small white potatoes , cut into quarters 2 large italian frying bell peppers , thinly sliced 1/4 teaspoon salt 1/4 teaspoon black[...]