Thanks, Sarahsarie! That’s very kind of you.
Turns out I was wrong about the whole surprise witness thing, though! When I was a Baby Barrister I had to appear in different courts and tribunals. I found out that they all do things in their own way.
In my experience, “lastminute.com” witnesses are often not welcome in the immigration or family courts which is the way I usually ply my trade. It’s a matter for the judge whether he or she allows late evidence but the evidence itself has to have a high “probative” value and be crucial to a fair and just outcome of the case. It clearly depends on the jurisdiction and its own rules of procedure.
I remember when I used to do personal injury cases, late evidence causes a lot of inconvenience and the person in the wrong can end up paying financially for their wrongdoing. Looks like it’s more a case of “anything goes” in the criminal courts – especially the fictional ones … !