Yes. You may extend your reservation, however, in order to confirm availability and be assured your rental is confirmed, please advise your rental location immediately or contact the supplier directly should you want to use and extend your vehicle for additional days.
Click here to learn more about driving a rental car in the UK.
Please note that extending a rental is subject to availability, If the car rental company has limited rental vehicles, you may not be permitted to keep your rental car for longer use, and you will need to return it at the time specified on your rental agreement.