Council chiefs have dashed hopes that a harbour town could be turned into a tax-free haven like Monaco. A local historian had hoped a law from the 14th century might exclude Queenborough residents from paying legal tariffs – including duty on wine. Des Cross says the Isle of Sheppey town could have seen house prices rise into the millions as the ultra-rich relocated. But legal experts at Swale council have poured cold water on the idea – saying that residents will still need to cough up their hard-earned cash. An average band D property owner there currently pays £2,136.43 a year, never mind w…