Blocking A Fire Escape

[Quoi]

I occupy an office in a block of 7 shared offices. One of the other occupiers persists in partially blocking a fire exit with boxes during the day.
This guy has been asked verbally and has had a letter from the landlord telling him not to block the fire escape but he still does it.
I have been collecting pictures but if there was a fire I dont expect him to spend his time moving the boxes.
I am responsible for fire safety in my office so where can I go next to prevent this hazard continuing.

[Postdog]

I like the idea about a fire drill. Karma

[lcg]

fire brigade and environmental health. they will actually witness, sanction and then take action if necessary. he sounds like a tool.