I’m not @aran neither @iestyn, but I think it’s still opened. If you go to learning page and click on “Subscription” when clicking on your profile name, you’ll get the option to join Growth club I suppose.
What you would not have is all recordings (and transcripts if you’d go for 20 GBP) but only from 38 (I believe now it’d be 38 or maybe still from 37) on.
Where to find and how to join Growth Club can find here
I hope it helps.