If you have a Tesco's clubcard account and you are moving home, you can inform Tesco directly by using iammoving.com. This will update your account details and send any special offers and information to you at your new address. iammoving.com lets you easily notify Tesco about your change of address along with over 1500 other companies online.
In order to send a Tesco change of address notification, you will need to register here. When you have registered all you need to do is add Tesco clubcard to your list of organisations. If you are already logged in, you can add Tesco Clubcard to your change of address list here