29 Attestation of constables.E+W
Every member of a police force maintained for a police area and every special constable appointed for a police area shall, on appointment, be attested as a constable by making a declaration in the form set out in Schedule 4—
(a)in the case of a member of the metropolitan police force or a special constable appointed for the metropolitan police district, before the Commissioner or an Assistant Commissioner of Police of the Metropolis, and
(b)in any other case, before a justice of the peace having jurisdiction within the police area.