Ashworth , for the court, held that the charge of assault was invalid and quashed the convictions. To come to this conclusion, the court made a key analysis of the requirements needed to show that a police officer was in the execution of his duties. {{blockquote|In most cases it is probably more convenient to consider what the
police constable was actually doing and in particular whether such conduct was
prima facie (on the face of it) an unlawful interference with a person's liberty or property. If so, it is then relevant to consider whether ==Footnotes and citations==