Sunday Special Roast Beef

Ingredients

• 1.5 kg boned, rolled and tied lean sirloin tip (trimmed of fat)
• pepper (to taste)
• 4 tsp prepared English mustard ((optional))
• 1.5 kg potatoes (peeled and cut into even-sized pieces)
• 650 g baby parsnips (halved lengthwise)
• 650 g baby carrots (halved lengthwise)
• 3 tbsp sunflower oil
• 650 g broccoli florets
• 1 3/4 cups reduced-salt beef stock
• 1/2 cup all-purpose flour
• 1 egg
• 1/3 cup low-fat milk
• 2 tsp sunflower oil