Something big at M&S ????

In York ealier in the centre and came across this crowd all waiting to get into M&S. Such excitement I thought, are there some Freebies, a big Sale, maybe someone famous had arrived. Was it a Flash mob?
It was none of the above, The Fire Alarm had gone off and they had all been evacuated, here they are waiting to get back in to continue spending their hard earned cash..