Lightly oil a roasting tray and place the cod in the bottom. In a bowl, combine the olives, herbs, spring onions, chillies and lime zest with the lime juice, then spread this mixture over the top of the cod.
Season with black pepper, then pour the tomato juice and fish stock around the fish. Place the hob and bring to the boil over a medium heat. Place the dish in the oven and cook for 12 minutes. Serve immediately, using the juices as a sauce with a herb leaf salad.