15(1)The application of the seal of the Police Authority is to be authenticated by the signature of—
(a)a member of the Police Authority; or
(b)any other person who has been authorised by it (whether generally or specifically) for the purpose.
(2)A document purporting to be—
(a)duly executed under the Police Authority’s seal, or
(b)signed on behalf of the Police Authority,
may be received in evidence and, except so far as the contrary is shown, is to be taken to be duly so executed or signed.
(3)This paragraph does not extend to Scotland.