If you are planning on applying to do a Maths based course at University then it would be advisable to read around the subject a little and explore beyond the curriculum. I suggest you take advantage of the many ideas I have posted on this page in order to make you a more rounded Mathematician and also to help when writing your personal statement.
If you are applying to a Russell Group University then you will most likely be required to attend an interview prior to an offer being made. I have listed some links to supporting resources to help you prepare below.
STEP links - Click here
Applying to Uni for Physics or Engineering - Click here
Students planning on pursuing Maths based courses at University or sitting the STEP papers would benefit from these modules compiled by NRICH - Click here
The Step Papers going back to 1987 can be found if you Click here
Worked Solutions for STEP and AEA papers at Integral Website - Click here
Go to https://my.integralmaths.org/login/ Username: mei-step Password: Stepaea1
MAT Past papers and Solutions - Click here
MAT worked solutions 2019 Videos - Click here
AEA Papers can be found if you Click here
Hungarian Maths Problems - The different sets were entrance examinations for different majors, such as engineering or mathematics - Click here Some interesting questions only requiring AS Maths but more thought provoking can be found here with the Oxford Physics Aptitude Tests Maths section - Click here
MEI Produce regular problems for those who like a challenge - Click here