We spent the last weekend of Sept 2009 at a campsite in Sandringham with our two English Springers. Our six year old healthy and hardy dog became very ill the day after we returned - vomiting, struggled to stand and walk, excessive panting, dehydrating, salivating, restlessness - need I say more!! We spent most of that week at the vets (£400). Dog was kept in for a day on a drip and had x-rays. Now seems to be recovered, but not sure if there will be any long-term effects. Our other three year old Springer was fine. They walked from the campsite to the main house, but mainly around the campsite. Kept both dogs to the paths and they drank no water. Six year old tried to be adventurous and explore all the time! Subsequently now heard there has been a problem in the area. Extremely annoyed - no notification anywhere to allow people to make an informed choice.