Proof of disability is required such as;
• Entitlement to Disability Living Allowance for children under 16 or Personal Independent payments for those aged 16-64, either in the form of a letter stating that the benefit has been awarded, or the actual Allowance book
• Attendance Allowance or Carer's Allowance letter of award
• Incapacity Benefit books, or a letter notifying the recipient that the benefit has been awarded
• A Blue or Orange badge, or
• In the case of visual impairment, a registration card known as the BD8 or a Certificate of Visual Impairment (CVI)