As Matt Ray discovers on a trip to the Channel Islands, Guernsey boasts Caribbean-blue seas, idyllic white-sand beaches and cider orchards, all without the crowds of the English South Coast – or St Lucia’s air miles Sign up to Simon Calder’s free travel email for expert advice and money-saving discounts Get Simon Calder’s Travel email Get Simon Calder’s Travel email Email * SIGN UP I would like to be emailed about offers, events and updates from The Independent. Read our Privacy notice A fter