Daily Telegraph link here Basically bored 15 yr old was left alone to stack shelves and set fire to cardboard to get out of it. Causing HUGE blaze and thankfully no injuries or loss of life. Obviously she is entirely responsible for the stupid and dangerous action and has been prosecuted accordingly.
BUT a part of me wonders what the heck the store staff were playing at. Work experience is not free labour. She should have been with staff learning about different roles and not bored out of her mind alone in a stock room. Or AIBU? Is that what work experience is for?