Chocolate lovers have been rushing to their closest M&S to get their hands on the supermarket's latest tasty treat -
.. . . . . . . . . . . . . . . . . . . . . . . . . .... . . * . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . + + + + + + + + + + + + + + + + + + + + - - - - - - - - - - - - - - - - - - - - . . . . .