Conclusion before explaining where the money could come from:
Shying away at the level of parliamentary member and cabinet with their trailing responsibilities, due purely from the emphasis that we're in difficult financial times is. Those engaged in service to The Crown should have prevailing future rights whether to compensate for wrongdoing or for ensure there is access to legal aid to test when intentional and covered-up harm has taken place.
If not in retrospect, if beyond 2030 we expect future children to fight for our country, the very least we can learn from our forefathers who set up many such in-perpetuity rights, would be that they can be assured that they will not be treated like pawns to be purposely sacrificed or to be enrolled in new weapons testing where there is biological damage in reasonably in prospect to any reasonably educated mind.