There is what is as close as can be to an authoritative list of Setright mark 1 machines compiled by Allan T Condie which is - or at least was - available for purchase, although a very quick look online hasn't come up with anything.
This has been compiled from various record sources, but does not claim to be complete.
There are a few older versions of this list in Excel format which have been put online, I believe without his permission.
This may not give what you want, for example it lists machine serial numbers 40278 - 40281, machines lettered S to V, being new to British Railways in 1958. For some batches, it gives a BR region, but does not go in to detail about what lines / stations / train crew depots, they were allocated to.
The Transport Ticket Society (as mentioned) may be worth making contact with / joining (I don't know how they react to people making contact just seeking information, but an e-mail won't cost anything.)
There used to be the 'Ticket Machine Website' which had active forums, but it fell off the internet a year or two ago and isn't showing signs of coming back.
The Greater Manchester Transport Museum also has an extensive ticket machine collection (I understand this was added to with a substantial bequest a year or two ago) and it's possible that the collector who left his collection to the Museum also left records of researches.
I'm not aware of any comparable listing for Almex machines, and later (mark 2 / 3) Setrights are less easy to record, as they didn't have individual serial numbers.