What would u do differently?

Watch the many videos Oxford/Oxford colleges put out. Info straight from the source. Eg. Jesus College Access has some good personal statement advice.
Be proactive. Do things you can talk about in an interview. Set up an academic club in your subject, read a ton of books, make notes on what you thought of them, watch lectures, do a MOOC - literally anything. And keep a diary of all these things. Your thoughts on them, how you linked them etc. are particularly important.
If your school don't give any additional support for Oxbridge applications, email somebody and ask what support they can give! With those GCSEs they will know you are capable and would love for you to get into a top uni for their sake. Make sure you get your personal statement in early, ask them for loads of feedback, etc. It sucks that they don't do anything already, but you have the right to request support.
Also - practice the UCAT.

Thank you so much 😊
With the UCAT, assuming that you have gone through the process, I want to ask how early would you recommend starting to prepare? I have been told not to start to early because of progress declining and all that but I would like to start say doing one question a week or certain exercises that would improve on the assessed skills (like I read somewhere for one of the topics you can randomly read a wiki page and see what you can absorb from the paragraph to help improve efficiency) would this be a good idea to develop the required skills or is burn out likely?
Obviously it varies from person to person but I'm just interested in what you would have done differently if you were to go through the process again? I have briefly looked at the test and honestly ik this will be a weakness of mine, especially because of the pressure. I have better chances if I leave a large threshold for error on the day rather than hoping to get better results than what I already averaged. Basically I need to be over prepared so I can flunk a little on the day due to nerves.
I’m so sorry this is long and wordy but I’m grateful for the time put into reading my message and any advice given…

I actually haven't done the UCAT; I'm applying for a different subject - but I do have friends who have sat the UCAT and they mostly worked off the official website https://www.ucat.ac.uk/prepare/practice-tests/ .
The best way to prepare is probably to identify your weaknesses early on (a practice test?) and use the question banks/ guides to work on those?
In terms of burn out, I wouldn't think a few questions a week would be too taxing, if you put aside the time to do them. You could also try to kind of manufacture an exam environment for yourself when doing full practice tests to try to work on nerves.

This is very helpful I’m so grateful for this advice, and wish you all the best for the future!

Hello
I’m a year 12 student in a state school that has okay results but doesn’t really focus on Oxbridge at all. Assuming I get no support from my sixth form for the applications, what advice would you give me? Anything which you would have down differently? I want to do Medicine at Oxbridge, am a UK student and don’t qualify for any widening access or free school meals or anything like that and I live in a really good area. GCSE: 11 9’s and a B for FSMQ Additional Maths. To sum up everything: what would you do differently and what did you do which will help me get to my goal?