National Curriculum:

https://www.gov.uk/government/publications/national-curriculum-in-england-mathematics-programmes-of-study

Subject Associations:

Institute of Mathematics & its Applications: https://ima.org.uk/

Exam Boards:

AQA: https://www.aqa.org.uk/subjects/mathematics

Edexcel Pearson: https://qualifications.pearson.com/content/demo/en/qualifications/edexcel-gcses/mathematics-2015.html

OCR: https://www.ocr.org.uk/qualifications/by-subject/mathematics/

BBC Bitesize:

KS3: https://www.bbc.co.uk/bitesize/subjects/zqhs34j

KS4: https://www.bbc.co.uk/bitesize/subjects/z38pycw

TES Resources:

https://www.tes.com/teaching-resources/secondary-collection/mathematics

Oak National Academy:

https://www.thenational.academy/teachers/programmes/maths-secondary-ks3/units

https://www.thenational.academy/teachers/key-stages/ks4/subjects/maths/programmes 

Teachit:

https://www.teachit.co.uk/maths

Additional resources – suggestions by Teacher Training Advisers in your subject:

https://www.atm.org.uk/

NCETM – https://www.ncetm.org.uk/ – Important for reading about maths mastery if you’re going for secondary maths or for primary.

https://nrich.maths.org/

https://mrbartonmaths.com/index.html

https://corbettmaths.com/

https://www.sparknotes.com/math/

https://timfootstudyskills.co.uk/resources/

https://mmerevise.co.uk/gcse-maths-revision/

There are also Maths revision materials here:

https://tutor-in.co.uk/learnonline/

Sample Subject Knowledge Audit:

https://www.leedstrinity.ac.uk/media/site-assets/documents/secondary-education/pgce-maths-subject-knowledge-audit-word.doc

https://www.ncetm.org.uk/classroom-resources/secondary-subject-knowledge-audit/

Sample Subject Knowledge task:

https://www.nottingham.ac.uk/ite-precourse/documents/secondary/maths-task-2.docx