Keep in mind that those with a driver's licence issued from the USA, Canada, Australia or New Zealand do not require an IDP to be able to rent a car in the UK. However, keep in mind that some car rental companies may require one if you are planning to drive across the channel, crossing by either Le Shuttle or a ferry.

For Americans visiting the United Kingdom in 2026, a standard, valid U.S. driver's license is sufficient for renting a car and driving legally for up to 12 months. An International Driving Permit (IDP) is not a legal requirement because the U.S. license is printed in English, which satisfies UK traffic laws. However, it is a "best practice" to carry one. While the law doesn't demand it, some smaller rental agencies or insurance providers might request it as a secondary form of identification. Furthermore, if you plan to drive across the English Channel into mainland Europe (e.g., France or Italy), an IDP becomes mandatory in many of those jurisdictions. In 2026, ensure your physical license is not expired, as "digital licenses" or mobile app versions are not yet universally accepted by UK rental counters like Enterprise or Hertz. Also, remember that most rentals in the UK are manual transmission; if you require an automatic, you must specify this and expect to pay a premium.