The easiest option would be to buy a new policy, to cover the remaining part of your journey. We strongly advise that you buy cover for as long as you need in one go, although we understand that travel plans may change.
Please note that it would be subject to your continuing to meet the eligibility criteria and the pre-existing exclusion would re-apply at the effective date of your new policy. When purchasing policies while travelling cover will start 24-hours after purchase.
Availability of cover may also be limited by your location at the time of intended purchase and how long you have been there.