Hayes v Chief Constable of Merseyside Police [2011] EWCA Civ 911; [2011] WLR (D) 269
“Where a police constable had exercised the ower of summary arrest provided by section 24 of the Police and Criminal Evidence Act 1984, it had to be shown, inter alia, that the constable had actually believed that the arrest was necessary, and for a permissible reason, and that objectively that belief was reasonable.”
WLR Daily, 29th July 2011
Source: www.iclr.co.uk