Where to begin... The 12 photographs attached to this post were discovered amongst a set of photographs belonging to my Great-Grandmother. All the other photographs were of people we knew about, but these 12 images are a mystery. One of her relatives was 'in service' as the term used to be known and it is quite likely that some of the adults photographed were people she worked for.
As to when they were taken I'd guess most of them are from the early 1920s and were taken at various locations in the English Midlands. A few of them are well suited for use as character portraits and many of the rest can be used as props. For example, one group photograph (Misc_Group_001) seems especially suited for Kevin A. Ross's scenario 'The Pale God'.