Caselaw hunting

I have searched high and low but can’t find it anywhere.

I remember a decision that tells us that there’s no such thing as a defective claim for Housing Benefit; evey refusal for want of provision of evidence is, in fact a decision that the claimant is not entitled using an adverse inference as to their circumstances.

Edit, it might be that an ongoing award was superseded for want of the return of evidence but it’s not simply closed but determined with the adverse inference as to the person’s circumstances

But can I find it?

R(H) 3/05.