In the UK version, the Captain complaints about a new slick of oil from a tanker that is contaminating the coastline. Sprocket has found a bone covered with oil. The Captain recognizes it as a fossil, then realizes it came from the Blue Crystal Cavern. If the oil spillage has reached the Cavern, it could destroy some of the most wonderful rock formations in the country. He grabs the phone to contact the coast guard, the police and the Ministry of Defence. Charlie the coast guard thinks the Captain is making a fuss over nothing. Commander Ponsomby calls to explain that the ship the Captain is complaining about isn't an oil tanker at all. The Captain realizes his radiator is very cold. At the end, the Captain has discovered that the oil leak came from the Light house's own central heating tank. He should have checked the facts before jumping to conclusions. Uncle Matt's postcard is the same as in the Canadian version.