Just to add a bit more to my post above for completeness (and to confused you further) back in the early 2000’s the government decided that the entire War Pension Scheme (incl WPMS) was no longer ‘fit for purpose’.
Thus in April 2005 a new armed forces injury scheme called the Armed Forces Compensation Scheme (AFCS) was created and then the Armed Forces Independence Payment (AFIP) was established so those on the AFCS could use Motability etc but the rates for AFIP were capped at enhanced PIP Mobility and Care rates.
If you were injured before 5th April 2005 you were placed on the ‘old’ War Pension Scheme. If you were injured after 5th April 2005 you went onto the Armed Forces Compensation Scheme and if severely injured enough receive the Armed Forces Independence Payment for life. What you cannot do however is move between schemes. You either get a War Pension (and any additional benefits) or AFCS/AFIP depending on your injury date.
Thus, over time the number of War Pensioners (and WPMS recipients) will decrease due (albeit hopefully not at the rate mentioned by Mitch in his post above his last post), eventually leaving only those on AFIP which is paid at the same rate as DLA/PIP.
*** Sorry mitch, your post appeared whilst I was typing this! Had to edit it a bit)
Dave