About McDonald's M4 Junction 49 Pontarddulais. Since 1974, McDonald's has been dedicated to serving quality food and quick service, at an affordable price for our customers. Visit McDonald's M4 Junction 49 Pontarddulais and choose from a menu of favourites, including McCafé® coffee, tasty breakfasts, delicious burgers like our Quarter Pounder®* with Cheese, McPlant, and more! Before you head out, check out the latest offers and order your food ahead on MyMcDonald’s app. Next time you’re looking for a treat, head to McDonald's M4 Junction 49 Pontarddulais . We look forward to serving you!