Should the PM have been more guarded?

The comments by David Cameron on motorists filling their tanks up have been sharply criticised by the petrol retailers because, they say, it is encouraging panic buying.

Are they right or was the PM correct in advising people to take sensible precautions?

As we saw in September 2000 a panic can soon be set off and that of itself can add to the shortages shortages.

@MikeSmithsonOGH