R v Lawrence (Stephen) [1982] AC 510 House of Lords

The appellant's reckless driving caused death. Lord Diplock formulated a standard direction to a jury based on reckless manslaughter:

"In my view, an appropriate instruction to the jury on what is meant by driving recklessly would be that they must be satisfied of two things:

First, that the defendant was in fact driving the vehicle in such a manner as to create an obvious and serious risk of causing physical injury to some other person who might happen to be using the road or of doing substantial damage to property; and

Second, that in driving in that manner the defendant did so without having given any thought to the possibility of there being any such risk or, having recognised that there was some risk involved, had nonetheless gone on to take it.


It is for the jury to decide whether the risk created by the manner in which the vehicle was being driven was both obvious and serious and, in deciding this, they may apply the standard of the ordinary prudent motorist as represented by themselves.

If satisfied that an obvious and serious risk was created by the manner of the defendant's driving, the jury are entitled to infer that he was in one or other of the states of mind required to constitute the offence and will probably do so; but regard must be given to any explanation he gives as to his state of mind which may displace the inference."

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