http://researchbriefings.parliament.uk/ResearchBriefing/Summary/SN06899#fullreport

An example from the report:

Inconsistent use of DHPs?

Evidence on the use of DHPs has raised questions around the adoption of different practices by local authorities – leading to allegations of a ‘postcode lottery.’ There are references to disabled tenants (particularly those living in adapted properties) struggling to access DHPs in some areas, coupled with issues around the need to submit repeat applications and the consequent uncertainty and anxiety associated with this. The adequacy of the overall level of DHP funding has also been questioned.