Niall.b, no, it doens't look like a round black plastic thing but it does have the most unlogical means to remove it. I'm not worried about removing that piece cause at such moments the Workshop manual comes in very handy

lamb chops, I know exactely what your saying mate, I've been that much @ my local dealership lately that the chief engineer gave me his mobile phonenumber. so I can order it when thinking of something.
Just need to text him...