“It seems to me that the inexorable logic of this passage is that where a police officer restrains a person, but does not at that time intend or purport to arrest him, then he is committing an assault, even if an arrest would have been justified. In the present case, Sergeant Cannon did not intend or purport to arrest the appellant when he restrained him and at no stage in the course of the fracas which resulted, did he assert that he was arresting the appellant. If he had done so or either of the constables had done so, before the appellant struggled in order to obtain his release, the position would have been different. But the facts found do not support such a conclusion. It follows that the appeal is allowed, and the convictions must be quashed.”
“(1) A person may use such force as is reasonable in the circumstances in the prevention of crime, or in effecting or assisting in the lawful arrest of offenders or suspected offenders or of persons unlawfully at large. (2) Subsection (1) above shall replace the rules of the common law on the question when force used for a purpose mentioned in the subsection is justified by that purpose.”