Pierce the sausages a few times all over using a sharp knife (this is optional, but will help release more fat). Arrange the sausages in a single layer in an air fryer basket.
Set the air fryer to 180C and cook for 10-15 mins, turning every 5 mins, until the sausages are cooked through. If you have a meat thermometer, check they have reached 75C in the middle. Serve as a side for breakfast or in buns.