This.
I went to vote during the mayoral election in May. As I was leaving a very dimly lit polling station there was a small step. As the carpet was black I couldn’t see the step and fell
It couldn't have been that dark, in May, even if you were the last voter at 10pm, and surely the step was there as you went in to vote, so it wouldn't have been a surprise it was still there when you went out.
no one who was a official at the polling station approached me or offered to help luckily I had my dh and ds2 there. I went to the hospital within 5 hours of the accident.
You had people helping, and presumably at the time were able to walk away (as you didn't go to the hospital for another 5 hours), so I am not sure why you needed additional people or what you wanted them to do ? Had you been on your own, or had you not been able to get up, you would probably have had people react differently.
I am sorry you fell and had an accident, but, as POTC said, what are you hoping to gain? Accidents do happen.