Why are some local authorities restricting enhanced Housing Benefit payments to charities & voluntary agency supported housing providers and/or forcing them to apply to become registered providers?

We are beginning to see disappointing examples of some local authorities imposing blanket restricted Enhanced Housing Benefit levels on non-registered provider supported housing (i.e., voluntary organisations and charities). This has nothing to do with matching resources to needs. It’s just crude cost control being exercised at the expense of supported housing and the people it houses and supports.