Have just returned from a day trip to France and Belgium. This is something we do 4 or 5 times every year (usually without any problems), to stock up on wine, beer, cigarettes and tobacco etc and despite taking every precaution we had our goods stolen from our car. After landing in France, thought the Channel Tunnel, we drove up the coast to Belgium to get our tobacco etc. After purchasing our goods and making shore every thing of value was in the boot and out of view, we returned to Calais for lunch. We parked the car, opened the boot of the car to get our coats out, and this is when we think somebody must have been watching us, secured the car once more and went for lunch. On our return the rear passenger door window had been smashed, the percal shelf ripped up and all the tobacco gone. So even though the goods were in the locked boot, out of view, they still managed to take our goods. So my warning is, even though your goods are out of view be careful when opening the boot as someone might be watching.
PS The local police did'nt want to know.