I'm genuinely quite worried about you going to court over this rather than taking the points, I was thinking about it yesterday.
I feel like you might think that you can say about the ambulance and the relative and that this might garner sympathy but I honestly feel like it might make things worse rather than better.
It's going to make it sound like you weren't in control of what you were doing because of external circumstances.
The way you talked about it on your first thread, about how it's your first offence and and you have never done anything like this before and so on make it sound like you feel like you are almost justified in what happened.
I think if you are going to court you need to take responsibility for it.
I've just been caught for speeding. There's no box to say why you did it on the form, obviously and it's only human that you want to say 'well actually there was a reason I was speeding it's........'.
Everyone who speeds has a reason that they do it. People are rushed off in ambulances all of the time.
I understand why you decided to go to court as you feel like you what to give your side of the story, but I am convinced that it's not going to improve the situation.
I hope your relative is OK. And I do feel sympathy for the situation that you are in now.