Lol I started on a bank hol. It's not too bad, usually a very short day. Collect stuff (ID, car park passes, uniform)
Tour of the mess room/booking on points and a prep talk from your line manager.
Your training for Bristol will mostly be SPM, however some of it can be done in Swindon.
The assessments and the long wait was just the start. The tough bit is learning the rules. Not difficult, but a lot to take in with around 2-3 assessments a week with a high pass requirement. You learn to appreciate why they are interested in if you have done a training course in the past.
I'm on the same course as Trainer74. Loving the course (even though it's a lot to take in) trainers are superb, got an awesome bunch of guys on my course

For those in the wait, hang in there. I'm sure you will hear something soon. From sounds of things the recruitment is far from over.