I'm probably going to give it a miss this year - i've been following a thread over on britishrally.co.uk and there's currently less than 50 entries
I'll be going to Wyedean this Saturday though - which apparently has a full 180-car field (with a long reserve list). Its a long drive (10 mins over the Severn bridge) but worth it
http://www.wyedeanrally.com/entry.pdf
BTRDA is doing a lot better than the BRC at the moment!