It's probably worth it to check out ADA.gov and compare it against the UK equivilant. Do indoor signs have Braille on them? Do ATMs have a headphone jack for audio guidance?
How common are visibly blind people? Is the white cane fairly well recognized? Do employees receive basic training on how to assist disabled customers? What's the hate crime/ harassment rate? Is 'catching fakers' a national past-time like in Italy? Was that police tasering incident a one-off or is it still a concern. Does he have normal legal rights if hospitalized, or is he a 'vulnerable adult'