Mudlark
From Tardis Wiki, the free Doctor Who reference
Mudlarks were people who scavenged for goods of value in river mud. This was common in England during the Victorian era.
Thomas Brewster was a mudlark for Creek in 1867. (AUDIO: The Haunting of Thomas Brewster) Patsy was a mudlark in the 1880s and the 1890s. (TV: The Talons of Weng-Chiang; AUDIO: Jago & Litefoot & Patsy) Angelica was also a mudlark in the 1890s. (AUDIO: Chapel of Night)