Season the beef joint with salt and pepper and place on an oven tray. Preheat the oven to 220°C fan. Place the tray in for and bake for 40 minutes or until cooked to your liking. Remove and cover the beef to rest. Peel the potato and cut it into quarters, put them in a pan, cover with water and then bring to the boil. Once they’ve come to the boil, cook for 2 minutes, then drain. Place the sprouts in a pan and cover with water, boil for 10 minutes.