[Jon D]

Does anyone know how to accomplish the above?
There are no visible fasteners, which leaves me presuming that it should simply pull off. Had a try at that whilst gently rocking it from side to side and back to front, but, although there's a good bit of movement, it doesn't want to shift. Maybe I'm not pulling hard enough, but I'm afraid to force it in case there's a hidden attachment.
Any suggestions welcome - thanks.