Preheat your oven to 180°C for fan assisted or 200°C (gas 6) for ovens without a fan.
Place the meatloaf into the middle shelf of the oven on a roasting tray.
Roast for 40 to 45 minutes basting once or twice as the pancetta fat renders as it cooks until the core temperature reaches a minimum 70°C.
Meanwhile in a separate pan gently reheat the tomato coulis stirring occasionally until piping hot throughout.
Remove the meatloaf from the oven, drain away any excess fat then sit the meatloaf on top of the tomato sauce and place back in the oven to bake for a further 10 minutes.