I applied for the Nottingham SCITT (Primary) and I got in!
For anyone considering it and wanting a bit more info (I know I was scouring the Net for anything to help!)
The first stage of interview was much easier than I'd anticipated. Documents were checked, a few people didn't have the full set, especially GCSE certificates (although they had the provisional results and definitely had achieved the grades) but there were no problems with bringing them later.
We then had to complete three audits- English, Maths and Science. English was correcting the punctuation in sentences and then writing an essay on the Pros and Cons of a SCITT based course. English was the only audit which was taken in and assessed.
Maths and Science audits were a variety of GCSE level questions. We were given textbooks to help us and we didn't actually have to finish the tests, they were more for us to identify gaps in our own knowledge.
The one-to-one interviews happened as were were working on these audits. Mine had a variety of questions on educational issues (inclusion, what had my experience taught me, examples of great teaching styles, how would I react to a stressful situation etc. although I understand everyone had different sets.) I kept relating everything back to experience, especially backing up any knowledge of government policies and changes with examples of how it was received in the classrooms in which I work. For me, feedback was instant (something to do with the school I wanted to work in having enough spaces I think, although my interviewer also gave instant feedback to his other candidate, so it may have been his style) and I was told I'd gotten through!
The second part of the process was a school based interview for those successful in the first stage. As the name suggests, this took place at the school in which we'd be working during out placements. Apparently, this was the most important part of the interview process. Mine involved a tour of the school; a brief period (20mins or less) working in the classroom, helping with lessons and interacting with the children; another English audit (a short essay); a formal interview and just a chance for the school staff to see how we'd fit in with them and if they thought we were well suited. Luckily, the school I chose was such a friendly place that I instantly felt at home. The interview was a little daunting (three staff members asked questions and took notes) and I really thought I'd fluffed it (I misunderstood a question and had to apologise for my lack of experience in the year group in which I'd been placed) but everyone was encouraging and praised my answers so I felt comfortable despite my lack of knowledge in some areas.
Feedback came after about 20 minutes and was given in the staff room. Luckily, I got through! The staff were absolutely lovely, offering tea and biscuits and opportunities to come back for more experience in the classrooms.
I'm still waiting for the GTTR to update, but I've been told to expect information in the post around July time.
EDIT As for what to wear, I went for smart casual (black heeled boots, black trousers, simple shirt and a smart jumper as it was a really cold day!) for both interviews. For the school-based one, I'd been told beforehand about the classroom experience and so felt comfortable going in something I didn't mind getting dirty (lucky for me as the children were doing an art activity!) At the first interview, some people were in suits while others went for a more smart casual look, but the atmosphere became so relaxed that it didn't seem to matter too much.