1. Preheat the grill to high. Squeeze the meat from the sausages into a bowl and discard the skins. Mix the meat together and form into 4 patties about 1cm thick. Place on a grilling rack and grill for 18-20 mins, flipping halfway, until cooked through. Add the bacon for the last 5 mins and turn halfway through.
2. Meanwhile, heat the oil in a frying pan over a medium heat. Crack in the eggs and season. Fry for 3-4 mins until the whites are set but the yolks are still runny.
3. Toast the muffins and divide the bases between 4 plates.
4. Mix the mayonnaise and chilli sauce and spread over each muffin base. Top each with a little lettuce, the sausage patty, bacon and 1-2 slices of tomato. Top with a fried egg and the muffin top. Serve immediately.

Tip: Make an indent in the top of the patty with your thumb to stop it curling up under the grill.