Pensioners on a low income may be eligible for extra support through Pension Credit. This is separate from your State Pension and may entitle you to further support such as Housing Benefit, Council Tax Reduction, and help with heating costs.
However, only 70 per cent of those eligible for Pension Credit claimed the benefit in the financial year 2019-20. I have written to the Government to press for an update on what is being done to encourage uptake.
You can find out if you're eligible here and apply for the benefit here.