It will depend on the car rental company you’re using, so you should check on their website before departing on your trip.
Usually, you’ll need a valid driving license held for at least 12 months, photo ID and a credit or debit card. You may also need a DVLA code. This is so the car hire company can see your driving history. You can request one from the Gov.uk website, and it will be active for 21 days.