Information and discussion on all aspects of British photographic history
First, can I say that I very much enjoyed your book, "Victorian Photographers at Work," which I purchased and read recently, and have learnt a great deal from it.
I suggest that you ask Bozi Mohacek and his enthusiatic associates who operate the web site for the Surrey Vintage Vehicle Society about the workshop and vehicles. They are an extremely knowledgeable bunch, and my guess is that someone there will be able to give you chapter on the workshop. Contact them through their web site: http://www.svvs.org/
I notice that they also appear to be manufacturing bicycles in this factory! I seem to remember that several of the early motor car manufacturers started off as cycle makers.
The cabinet card design is a generic one fairly similar to several in my collection. I have always assumed that they are from some time in the late 1890s. The dark green glossy card was, in my experience, most popular from the early 1890s to early 1900s. The design is similar in style to one used by several of the A & G Taylor studios around the time that the various "franchises" appear to have been undergoing some ownership changes and "restructuring" in the late 1890s and early 1900s.
With my meagre knowledge of vehicles, and therefore based mainly on the clothing, photograph quality and card mount, I would say that this particular example dates from around 1896 to 1902.
Regards and best wishes, Brett