This kettle on stand is marked Made in England with the attached trademark. The lamp is marked PROV. PAT 1750 / 12
No silver content mark found, other numerals on kettle are 21 on the bottom
I hope someone 
out there can add info for my research. Thanks 
Hi there,
The cross mark is the silverplate mark for Barker Brothers, Birmingham, UK (founded in 1860).
Cheers,
Ben.