this is my second visit to harperbury hospital this time accompanied by one site member and another non member. after a long train journey and plenty of hiking around we arrived at the hospital making sure to avoid the persistent stream of cars coming both in and out on top of the security post. we fairly quickly made our way in and found our camp site on the roof. after spending a few hours exploring we set out on another trek over to the nearest Sainsbury's to stock up. upon returning we set up our roll mats and sleeping bags for the night. in the morning after some fooling and being woken up by odd screeching noises around we then started to head home completely undetected.