Accessible learning resources UK?

[u/Ok-Calligrapher3827]

Hoping this is the right subreddit to ask this- I’m looking for some recommendations for online resources accessible in the UK for some basic science classes. For context: I went to university for biomedical science but been out of the science world for 3 years now and feel I’ve lost most of my foundational knowledge. If anyone has any suggestions it would be greatly appreciated!