A linked pair of tumbler switches (to make a DP switch) and a pair of pepperpot fuses, mounted on a square pattress like this, was typical of small domestic lighting installations up to the late 1920s. It was a cheap, basic way of making a DP switchfuse for up to 15A service. It would be quite common to find the cables leading to a small 2- or 3-way channel fuse board mounted adjacent or near ceiling level in the hall. Two pairs of pepperpots on a pattress, making a splitter to feed two circuits, was less common.
However, in this case I am not sure this is fully original. One or both pattress assemblies might have been re-purposed and re-installed because they were to hand. The left one with one circuit has the proper switches with the screws for the linking handle, although that is missing. The TRS cable leading from the top (if it is TRS) is probably later.
The ones on the right, I cannot see the flat surface normally present on the dolly where the screwholes are, so might actually be normal light switches in which case they are definitely not original. Presumably the outgoing circuits are in buried conduit, it will be interesting to discover more about the actual wire as that will help date things.
For comparison, there is a 3-way glass-fronted channel fuse board live in an installation in my sight. It is served by the same linked-switch and pepperpot arrangement and it was original to the building's first electrical installation. But it was removed and later reinstalled on the end of a submain by the owner, so it is not an original installation as such.
As is very common in these installations, a switchfuse has been added later to supply a ring. Until that was fitted there might not have been any socket-outlets at all or perhaps one 5A.
Keep us posted and assume all material constutes evidence and might be of interest. Some of us like to document the history of these things, as well as polish the brass.