Provision of information and evidence

6.  A local housing authority may require a person—

(a)to whom assistance has been provided; or

(b)who has applied for assistance,

to give to them, within such period as they may reasonably specify, such information or evidence (including information or evidence relating to his financial circumstances) as the authority may reasonably require for the purposes of, or purposes connected with, the exercise of their powers under article 3.