I am not saying it's not a good idea, It is. I am just not sure how enforcible it might be. Perhaps wheelclamping non blue badge holders might be better, then charging £50 for release.
Having said that, I do believe some establishments, not all, have a disproportionate amount of disabled bays. I have visited, through work, NHS & MOD establishments where I have struggled to park whilst there are swathes of disabled bays unused and remain unused most of the day. I don't know if there is a law which says a % of parking bays have to be allocated disabled.
