Full ruling downloadable here
https://www.judiciary.uk/judgments/r-v-auriol-grey/
Important part here;
"The appellant was in due course charged with manslaughter. The charge was pursued
as unlawful act manslaughter. The prosecution case was that the hostile reaction of the
appellant to Mrs Ward cycling on the pavement was unlawful. It had caused Mrs Ward
to fall off her bike and into the carriageway, resulting in her death. The words “Get off
the ******* pavement” characterised the appellant’s mindset of hostility to cyclists
riding on pavements. There was ample space for both the appellant and Mrs Ward to
pass one another but the appellant had deliberately obstructed Mrs Ward’s path, waving
her arm in such a manner that it either briefly made contact with Mrs Ward or caused
her to take evasive action, leading to her falling into the road to her death."
It accepts Grey contributed to Ward's death.
"The prosecution now accepts that, by the time that the judge summed up the case to the
jury, there was no evidence which could make the jury sure that the appellant had made
any physical contact with Mrs Ward. The evidence was that the appellant had
gesticulated and shouted at Mrs Ward using a swear word. There was however no
evidence to make the jury sure that the appellant pushed or in any way touched Mrs
Ward"
It does not accept that there is evidence to prove contact.
"On behalf of the appellant, Mr Adrian Darbishire KC with Mr Chris Henley KC, Mr
Tom Doble and Mr Brad Lewis (who did not appear at trial) submits that the Judge
failed to specify to the jury the act constituting the relevant “unlawful act” (sometimes
called the base offence) that was the alleged cause of death. Neither the Judge nor the
parties identified any such act during the trial. As a consequence, the elements of the
base offence were never left for the consideration of the jury."
The lack of contact makes the shouting and gesticulating the "base offence".
"The requirement to prove the elements of the base offence had been entirely overlooked by everyone, that is counsel on both sides and the judge."
Assault causing the death is the applicable base offence, but it was not proven to have happened;
"the base offence could not be a battery as the jury could not be sure of any physical contact. He submits that, on the facts of the case, the only base offence that could have been applicable was common assault..."
There was insufficient evidence to prove assault;
"Had Mrs Ward not died, we regard it as inconceivable that the appellant would ever
have been charged with assault..."
"In all the circumstances, we have no hesitation in concluding that the appellant’s
conviction for manslaughter is unsafe. The judge’s legal directions contained
fundamental and material misdirections of law. That stemmed from the failure of all
involved to properly identify and address the issues to be determined by the jury. Had
the need to identify and prove a base offence been recognised, the evidential
insufficiency of the prosecution case would have been recognised."
Grey's actions prior to the death, whilst contributing to the death, were not criminal.