Mobility Allowance (Blind Persons) Mr. David Price asked the Secretary of State for Social Services what would be the annual cost of extending the mobility allowance to include all registered blind persons. Mr. Prentice If mobility allowance were to be provided for registered blind people under age 65, the additional annual cost would be of the order of £20 million a year. If it were to be provided for all registered blind people, regardless of age, the extra total cost would be about £65 million a year.