Thought I'd post this up for anyone who might fancy a go.
Very friendly bunch, definitely beginner-friendly, and the courses range from 'pretty easy' to 'not very easy as all', but you can't get too lost (if you find yourself outside Lyme Park you're probably wrong).
Just turn up with suitable gear for running and a compass. Would consider long pants as sometimes there are a few spiky bits to get through.
Cheers Julian