"nor is it open to the courts to widen existing offences so as to make punishable conduct of a type hitherto not subject to punishment"
"Police officers either arrest for an offence or they do not arrest at all. .... The law is clear. Neither arrest nor detention can properly be carried out without the accused person being told the offence for which he is being arrested."
"Where does one find that there is power to detain short of arrest?"
"There is no direct authority on the point: see Rice v Connolly, which is as near as possible, and suggests there is none."
"That cannot be right. If there is an arrest, then the law comes into force. Can the officers say, 'We are not going to arrest you, but just going to hold you'?"
"Whatever the power to arrest or seize a man may be, since he was not arrested, what has Hale [Hale's Pleas of the Crown] to do with it? The officers were using some force not part of the process of arresting. Where is the finding that they intended to arrest?"
"One cannot doubt that arrest would have followed ...."
"This officer might or might not in the particular circumstances have possessed a power to arrest these boys. I leave that question open, saying no more than I feel some doubt whether he would have had a power of arrest; but on the assumption that he had a power to arrest, it is to my mind perfectly plain that neither of these officers purported to arrest either of these boys."