The London Stereoscopic Co still exist it's owned by Brian May the animal rights activist and sometime musician who once played on the roof of Buckingham Palace
They re-badged some cameras they sold in their store under their own name. I do have a 1899 advert for their cameras (not yet scanned). It's a Goerz Anschutz camera, not sure if it's a focal plane shutter version but it looks like it. I think there's a Goer advert for the camera in the same Xmas edition of the magazine.