Britain is home to the cheapest cocaine in the developed world and plentiful supply may be partly why. 1.2 metric tons of 90% pure coke were seized from a luxury yacht at Southampton last month—the largest ever British seizure, the UK border agency announced yesterday—although this particular merchandise was stopping off en route from the Caribbean to the Netherlands. The stash—which could have been turned into about eight tons of street material, valued at £300 million—was so well-hidden on board the 65ft pleasure cruiser, the Louise, that agents took six days to dismantle the boat and find it. Meanwhile Dutch police arrested six men. Cocaine has an average street price of just over $60 per gram in the UK, marginally lower than in Holland—while $120 is the going rate quoted for the US in the recent UN World Drug Report. In an apparent cause-and-effect situation, 2.6% of the UK adult population uses cocaine—the joint-highest developed-world rate alongside Spain—topping the 2.4% rate in the US. But just 0.6% of Dutch adults are users. Cocaine prices have dropped steeply in Europe in recent years and the continent has become almost as big a market as the US.