As far as I have figured out, London Underground staff refer to blind people as ‘VIP’s - which stands for ‘Visually Impaired Person’. I call that Political Correctness gone good.
I was on a tube carriage earlier in the week while a VIP was boarding the train. A staff member helped him board, and then presumably had to call forward to ensure that he received help at his destination. As the doors were closing, the staff member shouted through:
“You’re going to Kings Cross, sir, isn’it?!”
It really made me smile how this staff member showed the maximum possible amount of respect in one sentence.
Not only by showing respect with formal language, calling the guy ’sir’
But also by showing respect with his own informal use of language, framing the question with ‘isn’it?”
Really cheered me up, it did. Thanks, London Underground staff 
