A person is not entitled to personal independence payment for any period before the date on which a claim for it is made or treated as made by that person or on that person's behalf.
An award of personal independence payment is to be for a fixed term except where the person making the award considers that a fixed term award would be inappropriate.
In deciding whether a fixed term award would be inappropriate, that person must have regard to guidance issued by the Secretary of State.
Information supplied under this Part is to be taken for all purposes to be information relating to social security.