I know you have an awful lot on your plate Vicar and I worry that you are going to relapse if you continue in this job. I can't remember exactly when you started the first thread, but towards end of last year maybe? You were ill with depression and anxiety and over the months that you were off, we "saw" you gradually get better, even though the prospect of going back to the police job was hanging over your head.
Re court. I think Bassets idea is a good one - do a dummy run or better still get there by bus/train and taxi. You could go into the public gallery of the Crown Court to familiarise yourself with the building and watch what happens during the proceedings. I imagine you are being called as a witness for the prosecution and the defendant is pleading "not guilty" though quite often they "go guilty" just before the trial, in which case you would not be called to give evidence.
I have a lot of experience of court work but not in relation to criminal proceedings, only child/parenting relation proceedings, but I think the format is the same. The thing you have to remember is that it is not you on trial. You will possibly be intimidated by the Court, as most people are when they are unfamiliar with it, and you will see barristers swishing about confidently in their ridiculous cloaks and wigs.
I imagine that Counsel for the Prosecution will "set the scene" and you will be called to give evidence. I am assuming you were the arresting officer here Vicar and the barrister acting for the Prosecution will I think ask you questions. Sorry I am making a lot of assumptions here, because I haven't ever been involved in criminal proceedings. I don't know if you are able to look at your notes or whether you have made a statement to the court. In child related cases, all statements and relevant documentation are put together in a big lever arch file and it is known as the "court bundle" (I once knocked this off the shelf in the witness box!) I imagine the days have gone when PC Plod got out his little notebook and read "I was proceeding along Crap Alley and......."
The thing that most people are concerned about is cross examination and if the defendant is pleading "not guilty" then you will be cross examined by his or her Counsel (Barrister) I honestly don't think any barrister is going to give a PC a hard time in the witness box, because it is assumed that the police are honest and have integrity (hmm I've never believed that, present company excepted) Barristers have to maintain credibility in the Court and not upset the Judge (well not too much anyway) I think any questions in cross examination would be around the issue of whether you were certain about the facts, or could you have been mistaken. I am guessing here so don't think that's very helpful. Barristers love cross examining expert witnesses in child care cases, even though they know nothing about child development etc. but they will try every trick in the book to score a point.
The main thing is to remember that you are telling the truth - a wise colleague once told me when giving evidence to remember KISS (Keep is short, keep it simple) If the barrister wants to act a supplementary question he/she is at liberty to do so. Address your response to any questions put to you, to the Judge. Very occasionally they ask a question, but in my experience they are usually just seeking clarity on a particular issue.
However I do think it is appalling that you are not being given any help or support, especially over this court case. You don't usually get a date but are on a "warned list" covering a week or so, which doesn't help, especially when you want to get it over. Sorry if I am telling you things you already know. Stay calm and focussed, and give yourself time to think, you don't have to answer straight away. If there is something you don't understand, then say so. Remember you are just a little spoke in a big wheel and when you have given your evidence you can go and reward yourself with something nice! The CPS should be able to tell you which day you are needed, though sometimes you wait around for ever and then aren't called, and have to go back again the next day. I have spent hours sitting around in court waiting rooms - judicial minutes are slower than ordinary ones!
Having said all that, I really really hope you can get away from that job as soon as you can.
Oh god I've just remembered I was going to PM all this so as not to disrupt the thread but I can't do it all again, so please ignore as you see fit!