All notices given by you to us must be given to Gift Republic Limited at 4 Lyon Road, London, SW19 2RL or via e-mail. We may give notice to you at either the e-mail or postal address you provide to us when placing an order, or in any of the ways specified in clause 13 (above). Notice will be deemed received and properly served immediately when posted on our website, 24 hours after an e-mail is sent, or three days after the date of posting of any letter. In proving the service of any notice, it will be sufficient to prove, in the case of a letter, that such letter was properly addressed, stamped and placed in the post and, in the case of an e-mail, that such e-mail was sent to the specified e-mail address of the addressee.