The Independent highlights that Maths may be the most popular subject choice, but concerns remain about the skills of young people who choose not to study it after 16. Despite the existence of a L3 Core Maths qualification relatively few choose to take it up.
The popular A-level subject that the UK is struggling with:
https://www.independent.co.uk/news/uk/home-news/a-level-results-maths-subject-grading-b2815045.html