Regulations vary from company to company but companies usually require drivers to be around 25 years or older. A foreign national driving licence is valid in Britain for one year, although an International Driving Permit may be preferred if the licence is not in English. A credit card is essential and it is important to check what level of insurance is included in the price of car hire. All major car firms have locations all over the city, such as Avis (tel: (0870) 606 0100; website: www.avis.com ); Budget (tel: (0800) 626 063; website: www.budgetrentacar.com ) and Hertz (tel: (0870) 599 6699; website: www.hertz.com ).There has been a recent growth in budget/Internet car hire companies, spearheaded by easyRentacar (website: www.easyrentacar.com ), the first Internet-only car hire company with prices starting from just £9 per day. With some of the major car hire companies, prices can rise to as much as £40.