ERintoul's youtube channel has the most comprehensive video list for A-level chemistry and this is linked at the top of the page.
In addition, there are a few more youtube channels which are very helpful:
Khan Academy: Khan academy have a comprehensive guide for AP chemistry which is similar to the A-level chemistry cirriculum.
Allery chemistry: another useful youtube channel for A-level chemistry and tailored to each exam board
We have launched recently and we are in a trial period! We are looking for talented tutors to join our team and provide us with valuable feedback. Head over to the sign up page to start your journey!