It seems the Snell 2010 standard for helmets has been withdrawn for 2024, so check your helmets (and extinguishers, harnesses) are in spec and serviced. Don't leave it until the last minute!
This is a handy guide: https://www.classicsportscarclub.co.uk/post/helmets-and-belts-notes-from-the-scrutineering-bay
(Just noticed mine's a Snell 2010 so I'll be shopping for a new skid lid soon)