This is my first post on this website, so my bad if I do something wrong but I thought I'd chip in since I got the news a few days ago that I managed to get the full scholarship.
A bit of context I am a local Welsh student and I have attended state schools my whole life.
Tldr at the end
The college makes the admissions process sound a lot scarier than it actually is! It was reiterated that they want to scare people off of applying. This reduces admin work for the college and ensures that only the most determined apply and have the chance to get the scholarship.
For the interview I would recommend spending some time researching the college and having a somewhat solid idea of your future plans but overall it was very laid back.
The online reasoning test is a fairly short test that is essentially just an IQ test. I have no idea how well I did in it and there is no real way to revise it, just go into it with confidence and it'll all be alright.
The entrance exams were also very fair in my opinion. You choose one subject of your four to as your scholarship exam, this test is a bit harder and is what determines whether or not you get shortlisted or not. If you take any piece of advice from this I want it to be to NOT do further maths as your scholarship paper. The college does not care that you took the harder subject as your scholarship paper, they only care if you got a good mark on the paper.
The only paper I can really give advice for would be the maths paper as I also sat that paper. I did not take it as my scholarship paper though. The whole paper was just past paper questions. And I can say the same thing for every single one of my exams. If you want to revise, revise as if you were revising for your GCSEs.
The structure of the day is very laid back, you sign in, go up to the exam room, you get 30 minutes to sit each exam with a five minute break between and you get lunch too which was a good time to chat to people.
One of the most essential parts of the application process that I think people disregard is the personal statement. I ended up with about five iterations of my statement after showing it to half the teachers in my school and ripping it apart with my English teacher. Your personal statement is the only time the college gets to see who you are as a person, and the only aspect of the application process that is not under timed conditions, so use that to your advantage.
On results day you send your grades through and the day after I got the news that I got in. They ask for 9 A*s for a good chance of getting in for scholarship students and I will shamefully admit I did not get that on results day. I genuinely thought I was done for when I opened my results but thankfully (and rightfully so I suppose) the college looked at my grades contextually compared to my school, town, and background. I come from quite a deprived area and my mother is unemployed and my father is a student himself. I doubt the college would ever tell me but I am almost certain these aspects aided in me getting the scholarship. If I went to a big school in Cardiff with two working parents I doubt I would've gotten in, so please carefully look at your current situation and assess what kind of minimum grades you need.
My final piece of advice would be to go to an open day! I went to the one in January and I got to speak to the teachers and students and they all gave me great advice for my application and it was a great motivation. They also gave me a dragon which is pretty cool.
I wish you all the best with your application and GCSEs over the next few months. I hope you'll be able to join me in the new campus in 2026!

TLDR
Interview - research the college, it's very laid back
Online reasoning test - an IQ test essentially, no real way to revise
Personal statement - use the unlimited time you get to write this to your advantage! Take your time with it
Entrance exams - do NOT choose further maths as your scholarship paper. Revise it as you would your GCSEs, it is all essentially past paper sort of questions
GCSE grades - look at yourself and your school contextually, formulate your own minimum grades
Overall - attend an open day! Very nice event with free stuff and a great opportunity to get even more advice (they are in October and January). Best of luck with your application and GCSEs and I hope to welcome you in the new campus in 2026!