https://nrich.maths.org/coordinate-geometry-and-graphs

https://www.geogebra.org/math/quadratic-equations

A level past papers with solutions https://mrbartonmaths.com/a-level-maths-revision-past-papers-and-exam-solutions/

Pure math revision worksheets

https://mrbartonmaths.com/a-level-pure-1-essential-skills/

Pure math 1 old papers

https://www.physicsandmathstutor.com/a-level-maths-papers/cie-paper-1/

Quick revision notes

https://grolearning.com/index.php/a-level/maths

Topic wise textbook like chapters with notes and practice problems

https://www.cimt.org.uk/projects/mepres/alevel/alevel.htm

Help modules for 10 math topics

https://www.cimt.org.uk/resources/help/help.htm