It's about time they tested whether or not it really is safe for people to stay there. They would need to take plenty of antibiotics though. (It was used to test Britain's Biological Weapons during World War II and was so heavily contaminated with Anthrax spores that no one was allowed on it until 1990!)
Had it not been for "Operation Dark Harvest" the British government would never have paid for a thorough decontamination of the island and it would still be deadly.