I am aware of my hon. Friend's strong feelings on this matter and his consistency in arguing the case. He will be aware that there is strong pressure to extend the age range of beneficiaries as well as to admit new categories, not to mention many other extensions of the mobility allowance scheme. There is an infinity of claims against, regrettably, finite resources. What may be helpful to my hon. Friend is to know that blindness can be one factor among others in deciding the award of mobility allowances.