Beef stew and dumplings

Name: Beef stew and dumplings
Cuisine: European, British
Ingredients: 5 celery sticks; 1 medium brown onion; 3 small carrots; 2 tbsp sunflower oil; 2 tbsp plain flour; 750g lean stewing beef, diced; 2 large maris piper potatoes, peeled and quartered; 1 tbsp worcestershire sauce; 2 bay leaves; 3 garlic cloves, minced; 1 heaped tsp dried mixed herbs; 2 low salt beef stock cubes; freshly ground black pepper; 200g self-raising flour, plus extra for dusting; 70g suet; 50g cheddar, finely grated