Just been looking through my local one, GWR and surprisingly some stations are still over 30% cash rather than card sales. Particularly in holiday areas.
Also appears there are stations like Evesham with over 20% using cash rather than card, but with card only TVMs, presumably that means the 20%+ won't be able to buy tickets before boarding
Also get Stations eg Dawlish, where only 40% of journeys booked online, and other 60% are walk up, bought at station, but just a single TVM
Some eg Bristol Temple Meads are showing the ticket office as reduced windows, but then show complete closure late 2024 further down the page
Document is long, and gives breakdowns for one station per page