Cutlery background

Could anyone identify these id marks on this fork which us part of a set
Thank you in advance



WILLIAM CLARKE (possibly)
London
Active at Wilderness Row (1867), 36 Clerkenwell Road (1879), Great Sutton Street (1888). Possibly out of business in 1894. Activity as electroplater is recorded in 1885.

Thank you
Thats interesting to know
They made them to last those days

U welcome! ----------------------------------------------------------