Mix together the ketchup, sugar, honey and Worcestershire sauce in a small bowl, then brush all over the ribs. Place the ribs in a large baking dish and bake in a preheated oven, 220°C (425°F), Gas Mark 7, for 25 minutes until golden and cooked through.
Meanwhile, make the salsa. Mix together all the ingredients in a bowl and season well with pepper.
Cut the pork into separate ribs and serve with the sweetcorn salsa.