Reclaiming reduction for Pension Credit

Oldegreyone

My late mother (this is my defense: a very private person, hard of hearing and 250 miles from me) Was in receipt of Guaranteed pension credit since 2013.  She was 86 at the time, but never claimed an allowance for it from her local authority. I only found this going through her paperwork a few days ago. 
The authority is another " its all on the website". (Not so great if you are mid 80s with no internet) Are the local authority under any obligation to repay anything?. Had she claimed she would have received pretty much a full reduction. She did get the reduction for single persons occupancy.
Any tips, clues etc. gratefully received.

lincroft1710

Unless the legislation allows for a backdated claim to be made by the executors or administrators of a deceased person's estate, the answer would be no. If the legislation makes no reference to backdated claims then it is extremely doubtful any council would entertain such a claim

Oldegreyone

Not sure which legislation is the relevant bit ...will try and find out