The RSC has launched its 37 plays project. It is searching for plays that ‘write the story of our nation’. Entries open in January 2023. It looks as if the site will be useful for resources including a podcast hosted by playwright Mark Ravenhill based on his 101 playwriting notes.
Mark Ravenhill’s notes are available in full at The Bruntwood Prize site. The closing date for that prize is June 6th 2022. Their site also has other great resources.