M&S Count On Us Fish Pie with Pollock, Prawns & Scottish Salmon Pollock, prawns, Scottish Lochmuir™ salmon and spinach in a cheese sauce, topped with mashed potato. Simply bake in the oven. High in protein.Serves 1. M&S Count On Us is flavoursome, low calorie food that you can count on to manage a healthy weight. Each freshly prepared meal is under 375 calories. Each dessert is under 180 calories.