I've been building a rudimentary page featuring final tables and membership lists.
So far back to 2015 is more or less complete, most of the info is still available on the web, as are the top divisions back to 2009 ish. From there to 2000 meant digging into the WebArchive, some hits but a lit of misses (pardon the pun). I've used the BNA for the years before 2000 but these have been very sketchy. I have uncovered two champions from the 80s, Allanton Miners (1984) and Dundee Strikers (1983 and 1987). Filling in the many gaps would be most welcome!
http://sfha.org.uk/womensleague.htm