If people think they may qualify for a free bus pass, they should get in touch with their local council.
The older age group is the most likely to be losing out on financial help according to Age UK. Some 850,000 are missing out on Pension Credit which could add more than £3,000 a year to their finances.
Pension Credit is available to people who have reached State Pension age if they earn £177 a week or less.
Typically, it can also mean they receive help with housing costs and a free TV licence if they are also over 75-years-old.