I've been called twice, about thirty years apart. The first time I was sitting on three cases and the second time, one.
There is much waiting around, as been said but it was interesting to meet a cross section of other jurors, most of whom I would not have met in normal daily circumstances. I do remember one chap, a lorry driver who was illiterate, yet he was called for service as it was his common sense that was valued and not his reading ability. Reasonable in the case we were trying, as there was no paperwork involved but it could have been problematic in something such as a fraud trial with a paper-trail.
I also remember our jury gaily ordering sandwiches from the deliberating room and when they arrived, being charged for them. We erroneously assumed that as we were locked in, they would be a freebie! A silly point but obviously still on my mind!!
I was also summoned for a very long very scary bank robber trial. The defendants stood in the dock and their eyes bored right through us, the prospective jurors. Thankfully, I asked the judge to release me from standing for this case as I had young children (we had been told it would be a long one) and he agreed. Phew! This was in the days of jury vetting, which I don't think happens now.
I did find one has to be sure in one's own mind as other jury members will try and sway your perceptions and everything can become grey and not black and white, very easily. Clever barristers are a sight to behold but I don't know how some of them sleep at night.
I was voted foreperson on one trial and that was a bit scary as I worried about blurting out the wrong verdict at the wrong time, although it was OK in the end.
Oh yes, one other thing: our jury couldn’t agree on a verdict on one trial and the judge was absolutely furious with us. He discharged us, almost foaming at the mouth, and arranged another trial for the two defendants. It then came to light that we were the second jury unable to agree a verdict but the defendants still had to endure a third (this was many many years ago when attitudes to 'goings on' in bushes at night by men, were very different!)…...