I'm actually a BB holder myself, simply because I can't walk more than a few feet without being in agony. However, I would like to know, if for example, someone who is blind would be entitled to one, as while this is obviously a major disability, if this is their only one, then presumably they wouldn't actually need a BB? I know we say that not every disability is visible, but surely not every disability warrants a BB, as lots of people with hidden disabilities can also walk? I'd be interested to hear from anyone who knows the answer to this.