Biology A level is advanced level biology. The syllabus overlaps quite a lot with AP biology in the American curriculum. This subject is usually taken by people who want to study medical and biological life sciences. Biology A level overlaps with grade 12 biology taught in the American syllabus and many other syllabi. Below you will find resources and tutors for this subject!
Tailored tutors is a great website which offers biology, chemistry and mathematics, however their video course for biology A-level is the best! You can view some of their free material on youtube (link at the top of the page) but they are definitely worth it! Other useful websites Physics and maths tutor: contains A-level specific revision guides and question banks for practice! Khan academy: the biology library in khan academy is very comprehensive and useful for biology at any level!