How to get mirrors off wall?

[HinnyPet]

(... carefully I know )

but seriously, opposite our loo in our bathroom are 6 huge ceiling to floor mirrors, they have been glued on by previous owners. (they are especially useful to watch yourself having a wee)

How do you get them off?

.... and is there an incantation to recite when breaking mirrors!???
Not that I'm superstitious or anything you understand ....

they have been glued on? definitely no incy wincy screw you can't see?

i just had to get someone to remove my mirror as i couldnt work out how to do it, but that had very visible fixings, but not screwdriver type screws, just like round buttons you unscrew by hand.

ROFL at anyone wnating to put mirrors in that position

Glued on yep. They are about 30 years old, along with the rest of the furnishings here!