Criminal law – Assault. In 'potting' cases – a prisoner either throwing at or smearing a prison officer with urine, faeces or both – it was for the judge to rule as a matter of law whether the substance, in the quantity and manner in which it was shown by the evidence to have been administered, could properly be found by the jury to be injurious, hurtful, harmful or unwholesome, and if so, it was for the jury whether it was satisfied that it had been a noxious thing. The Court of Appeal, Criminal Division, also gave guidance as to the appropriate level of sentencing in 'potting' cases.