"Only witches and wizards will be able to see this post," writes Mid Yorkshire Hospitals NHS Trust in a post on facebook.

"The Children’s Assessment Unit (CAU) at Pinderfields Hospital didn’t previously have a ward number, or so we thought... It turns out only little witches and wizards can see the new sign that displays the wards number; 9 3/4.

"Non-magic folk will just have to take our word for it that this is a picture of the new sign.

Please note: we have been informed that there is no portal to the wizarding world via the CAU so please, if you are magical, don’t run at our wall."