What you'll need to take

1. Driver's licence.
2. Many car hire companies require a full driving licence with a photograph and be held for at least 2 years with no major endorsements.
3. For foreign renters, usually you need to bring an IDP and your domestic licence but the requirement of some destinations may vary.
4. Please refer to Driver’s Licence Requirements for more details.
5. Credit Card.
6. A valid credit card in the name of the lead driver must be presented at the rental desk in order to pre-authorise/charge the deposit. Deposit: approx.GBP400-2495 for pre-authorization from main driver's credit card.
7. Usually a deposit will be held against your credit card for the duration of the rental. Your deposit is a guarantee held in the event of damage/theft of the vehicle. This will be automatically released if there is no theft or damage during the rental period. Please note that this does not represent your total excess liability which can be found in the Insurance Coverage/ Excess liability section.
8. In the event that you fail to present a valid credit card, there is a lack of sufficient funds available on the credit card or the credit card is not in the lead driver's name, the car rental agent may refuse to release the vehicle. In these instances, no funds paid will be reimbursed.
9. Form(s) of ID.
10. A valid photo ID (Passport or National ID).
11. Voucher.
12. A printed version of your voucher must be produced upon arrival at the rental desk. Failure to present the voucher means the car rental agent may charge you at the local rates. Please note: We are not responsible for overcharges on rentals where the voucher was not presented to the local agent on collection of the vehicle. If you do not present the required documents, the documentation is not valid or you do not have enough funds on your credit card, the car rental agent may refuse to release the vehicle and no funds will be reimbursed.

Driver’s licence
1. All drivers must be in possession of a full driver's licence, many car hire companies may require driver's licence held for at least 2 years. Furthermore, the following conditions apply depending on the issuing country of the driving licence.

UK driver's licence
1. Since June 8th 2015, the rules have changed for people who hold a UK driving licence. In addition to your licence, either a valid and up to date DVLA licence check code or a printed DVLA endorsement record must be provided for all Approved Drivers. So when you hire a car, you will need to visit the DVLA* website before you pick your car up. The website will give you a ‘licence check code’, which is only valid for 21 days.
2. If you have a photocard licence, you shouldn’t need your paper counterpart ever again. However, some car hire companies might take time to get used to the new system, so we still recommend you take your counterpart (and licence!) when you pick your car up.
3. Drivers under 23 years of age must not have any endorsements on their licence. For drivers 23 years of age and older, the maximum number of points on the licence is 6. However, some endorsements on your licence may restrict your ability to drive the vehicle, even if you have 6 or less points on your licence.

Foreign driver's licence (Licence issued in an EU country)
1. If your licence is from one of the EU countries*, you can use it in the same way in the UK as you would do at home. The licence must be valid for the type of vehicle you drive. * Austria, Belgium, Bulgaria, Czech Republic, Republic of Cyprus, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Liechtenstein, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, Slovenia, Slovakia, Spain and Sweden.

Licence issued outside EU countries
1. If you are the holder of an ordinary driving licence or a valid international driving permit, you can drive any category of small vehicle (up to 3.5 tonnes) shown on your licence. You will be able to drive for up to 12 months from the date of coming to UK if you are a UK visitor.
2. If your domestic driving licence is printed with non Roman Alphabet (Arabic, Japanese, Cyrillic etc), an International Driving Permit (IDP/IDL) or an official
translation in English is required when you drive in UK. Please note that an International Driving Permit (often referred to as an International Driving Licence) does not replace the requirement for a regular driving licence. And you must carry your current overseas driver’s licence, IDP or translation with you all the time when driving in UK.
Asian IDP countries: Hong Kong, Macau, Taiwan, South Korea, Japan, Philippines, Singapore, Thailand, Laos, Malaysia, Bangladesh, Cambodia, India, Sri Lanka, Pakistan, Kyrgyzstan.

Age requirement
1. The minimum age generally to rent a vehicle in UK is 21 years old. But the age restrictions may vary by different car categories. Each car hire company has its own age requirements. If you're 21-25, you are likely to have to pay a young driver fee. If you're 65 or older, you may have to pay a senior driver fee.

*Attention! Some car hire companies would have different requirements. Please check Terms and Conditions during the booking process.

https://www.europcar.com/terms-and-conditions

All orders must comply with and agree to the terms & conditions of using the rental car company.
Please refer to this above link for more details.