What it is
When a child loses their parents, the relatives, friends or carers who step in to raise them often have no idea there is a specific benefit to help. Guardian’s Allowance is exactly that — a small, steady, tax-free weekly payment for bringing up a child whose parents have died.
It is one of the most under-claimed payments in the UK precisely because of its name: people assume you have to be a court-appointed "guardian". You don’t. If you are responsible for the child and getting Child Benefit for them, you should check it.