I've not updated the links on here for a while but I'll get round to that soon as there are some really excellent resources available for the A level now and more on the way.
One great resource that I would recommend is Heddwen Newton's English in Progress Substack, which you can find here. Heddwen curates a regular newsletter full of links to interesting stories about language, many of which are perfect for the A level course. We spoke to Heddwen in the second half of this episode of Lexis too so have a listen!