You will need your UK driving licence and a credit card to hire a rental car in Spain. Although you can drive in the UK from 17, you have to be over 18 to be able to drive in Spain. You will have to pay additional premium if you're younger than 21 years old.

Another important thing to remember before starting your engine is that Spain drives on the right hand side of the road.

You will find many websites provide car hire booking online if you google with the key phrase like 'hire a car in spain'.