Possible Clues:

• Country with low duties
• Many an offshore bank account
• Jersey and casual shirt is for a mystery man from shelter
• Cayman Islands, say, as point of no return?
• Where one may get off scot-free?
• Jersey, for example?
• E.g. Jersey or Guernsey don't get a vote during cycle
• Thanks to vote, own new duty-free area?
• Thanks for copper going from German port to Gibraltar, say
• Man's one demand: own mansion at last