Renewing your policy When we offer to renew your policy: we will send you a notice before the policy expiry date; we will tell you in writing if there are any changes to the policy; we may require an additional premium if you make a claim in the short period between the time we calculated the renewal premium and the expiry of your policy, or if you tell us about changes to your policy details in that period and we tell you they will increase your renewal premium. If the additional premium is not paid, we.