The best way to get in touch is to send an email to the chairman (firstname.lastname@example.org).
You can send post to:
47 Cornwall Road
The site itself is located down a short track from the corner of Cornwall and Riverside Road in St Albans, as per the Google map below. Note that there is no parking at the site so visitors are encouraged to arrive on foot or by bicycle. There is a small amount of cycle parking on the site itself.