@WhimsicalGubbins76 I did jury service back at the end of October so quite recently.
From the point I accepted I then got a confirmation pack in the post with a bit more information and foetal on where to be at what point, local parking information etc.
Day 1 I arrived at the set time, we just had a video to watch after our ID documents had been checked. You do have to go through airport style security so don't take cutlery etc. sadly our juror waiting area just had seats and a few puzzles, basic facilities- toilet kettle fridge and vending machine.
You are initally to be available for 2 weeks and they do try and let you know in advance if it's likely to be more than that (some of the jurors we met were on week 3 or 4 but had been advised of that).
At selection time, 15 names from all available (some of those were the juror is not selected the previous week) were called into court. Brief details of the case were mentioned and names of the person on trial and key witnesses announced. At that point you had to make the clerk aware if you recognised either. From the 15 they then call 12 (I thinks it's twelve- I was number 4 so stopped counting). The others go back to that waiting area and may either be sent home or told to wait around. You then get sworn in and the case is under way. You absolutely must not (and the judge will reiterate this) do any of your own research or talk to anyone else outside your jury about the case. You decision has to be made on the facts presented.
You can't have your phone on when in court or in the room you are allocated as a jury to discuss and agree a verdict. The clerk takes them away.
I had one case in the first week so was in 3 days then told I wasn't needed in the Thursday and Friday. I was messaged to say I was needed back in the Monday but in a different court (within the same county).
I think we just sat around that day before being dismissed and then had to be back next day.
That day I was again selected and sworn in for a case lasting about 3 or 4 days. Gladly one of the jury had to pull out before the case started (we were sworn in and then sent on a lunch break). They then have to formally discharge you, gather enough people to select another random jury (th ey don't just replace the person). That lost us all Tuesday and as I had advised I didn't have childcare available after the end of the week they said I was no longer needed.
Remember to get receipts to claim back parking and any travel costs (they pay a certain amount per mile for fuel) and claim for lunch even if you take your own on the days you are in. Maximum amounts you can claim should be on your documents but lunch and travel is on top.
I was really really nervous ahead of it, met a bunch of lovely people so we all got chatting while waiting around which made it better. I would do it again, even though we had a really sad case (they do offer support if you need it).
If they don't sentence while you are there you can call back and find out the outcome (if you find someone guilty)