Fishermans pie

Name: Fishermans pie
Prep time: 10 min
Cook time: 30 min
Total time: 40 min
Cuisine: European, British
Ingredients: 700g (1lb 9oz) potatoes washed and chopped; 300g (10 1/2oz) skinless boneless cod or haddock fillet; 300g (10 1/2oz) skinless salmon fillet; 300ml (1/2 pint) semi-skimmed milk plus a little extra for mashed potatoes; 2 bay leaves; 25g (1oz) unsaturated margarine; 2 small leeks washed and sliced; 115g (4oz) mushrooms sliced; 25g (1oz) plain flour (white or wholemeal); 115g (4oz) frozen peas; 2 tablespoons chopped fresh parsley; Freshly ground black pepper to taste; Fresh parsley sprigs to garnish