Should you or any member of your party need to cancel your chosen holiday once it has been confirmed, the party leader must immediately advise us in writing. Your notice of cancellation will only be effective when it is received in writing by us at our offices. As we incur costs from the time we confirm your booking, the following cancellation charges will be payable. Where the cancellation charge is shown as a percentage, this is calculated on the basis of the total cost payable by the person(s) cancelling excluding insurance premiums, amendment charges and any paid or owed “extras”. Insurance premiums, amendment charges and paid or owed “extras” are not refundable in the event of the person(s) to whom they apply cancelling.