Can I suggest a look through of this published at the end of July by the RAF?
https://www.raf.mod.uk/serving-famil...dgment-update/
A line that jumped out at me was this:
All policy legislation and process must be implemented by October 23.
Basically they have set themselves a very lazy target (over 2 years away) to have the solution in place. I have zero hope they will finish the task early. Which is going to mean huge back payments are going to be due to some people who may have over 5 years of underpayment by that point. Christmas 2023 is going to be epic.