Barry (with him Nimmo), for the applicant Davies. Evidence of
identity, based on personal impressions, given by a witness pre-
viously unacquainted with the person identified and unsupported
by other satisfactory evidence, is, as a general rule, an unsafe basis
for the verdict of guilty (Report of the Committee of Enquiry, Trial
of Adolph Beck, Notable British Trials Series, p. 250). If evidence
of personal identity is to have any value, the recognition by the
witness of the prisoner must have proceeded from the witness's
unaided recollection of the physical appearance or characteristics
of the person previously observed under incriminating circum-
stances (Craig v. The King (3); R. v. Smith and Evans (4); R. v.
Dickman (5)). The evidence of a witness that he recognizes the
prisoner as the offender is rendered valueless, or practically so, if
it is shown that the alleged recognition was made under circum-
stances which suggested to the witness that the prisoner was in fact
the offender, or was believed by the authorities to be the offender
(BR. v. Dickman (6); R. v. Bundy (7); R. v. Gardner and Hancox
(8); BR. v. Murray and Mahony (9); Halsbury, Laws of England,