Ok rough idea with many options. All milk is semi-skimmed and nothing is reduced fat or low calorie. This is based on someone who is sedentary and walks 30 minutes per day at a slow to medium pace.
Breakfast: Cereal (2 weetabix, 40g porridge oats, 40g cornflakes/all bran/frosties/bran flakes etc) + 250ml milk + piece of fruit or 250ml fruit juice or 2tbsp dried fruit
Mid Morning: snack (2 slices toast and butter/3 digestives/1 large cookie/1 doughnut/1 packet non low fat crisps/ 1 non low fat yoghurt/1 nutrigrain bar/1 large pancake/3 crackers with cheese/1 chocolate bar/1 toasted bagel and jam) + 200ml milk or fruit juice or piece of fruit or 2tbsp dried fruit
Lunch: 2 slices bread/large roll/baguette/large wrap/small baked potato + spread + salad + filling (meat/cheese/egg/humous/peanut butter + coleslaw/mayo/mustard/pickle) + 250ml milk or fruit juice or full sugar cordial + pudding (3 scoops ice cream/non reduced fat yoghurt/3" slice cake/apple crumble + custard/strudel + custard/chocolate bar/crisps)
Afternoon: snack as morning.
Dinner: protein ( e.g chicken breast or leg or 2 thighs/fish fillet/120g mince/120g beef steak etc) + veg 1-2 portion of +carbohydrate (3 scoops mashed potato/3 egg sized boiled/roast potatoes/ramekin full of rice or cous cous/100g pasta (uncooked weight) + 250ml milk or fruit juice + pudding as before
Before bed: cereal and milk as per breakfast or 2 slices toast and spread or mug or horlicks or hot chocolate
If this doesn't make sense just ask. HTH.