70Search by service policeman upon arrestE+W+S+N.I.
(1)A service policeman may search an arrested person if he has reasonable grounds for believing that the arrested person may present a danger to himself or others.
(2)A service policeman may search an arrested person for anything that is subject to search if he has reasonable grounds for believing that the arrested person may have any such thing concealed on him.
(3)For the purposes of this section a thing is “subject to search” if—
(a)the arrested person might use it to assist him to escape from service custody; or
(b)in the case of an arrest under section 67 or 69, it might be evidence relating to a service offence.
(4)References in this section to an arrested person are to a person arrested under section 67, 69, 110, 111 or 303.