From HMRC:
Millions of households across the UK receiving certain benefits, including tax credits, have now received Cost of Living Payments of up to £650, paid in two lump sums of £326 and £324.
If a customer thinks they’re eligible for the second Cost of Living Payment but haven’t received it, they can report this on GOV.UK.
The government announced up to £900 of additional Cost of Living Payments for households on means-tested benefits in 2023 and 2024 as part of the Autumn Statement. We’ll confirm details of these payments including who is eligible and when they’ll be paid, as soon as possible.