TL Maths is a godsend!
I’m OCR MEI, but he covers multiple exam boards. He has a website and a google docs with the video links organised in topics.
If you go to his website, there should be a link for ‘A Level Maths’. Then, there’s another link for the ‘Edexcel Teaching Order’. If you can’t find it, a simple google search for the YouTube will work. 🙂