I eventualy thought I would stump up for a membership and was plesently suprised that I can pay by DD at £3.90 per month. Thats giving you 12 months for the price of 9.
Considering it costs £30 for a family ticket to our local site I think its a bargain. Means we don't have to walk miles to sneak on site or wait till after closing time just to go for a walk in the grounds. I love it there and will go at least once a week so that would cost £480 as its open april to oct.