Smith (P.C.)
From Tardis Wiki, the free Doctor Who reference
PC Smith was a police constable in 1888. Lewis told "Sir Charles Warren" that Smith had seen Elizabeth Stride alive a half hour before her death in the company of a fair-haired man. (COMIC: Ripper's Curse)
Behind the scenes
Neither William Smith nor Henry Smith are identified by anything beyond their last names and titles in Ripper's Curse.