Harlequin Hire Cars Guernsey Several models are available for your time on Guernsey. Cars can be hired from the Guernsey airport, the harbour or delivered to your accommodation. A 24-hour breakdown service is available. Address: Les Caches, St Martins, Guernsey, GY1 3QW Send an Email (3) +44 (0) 14 8123 9511