British Vehicle Rental and Leasing Association (BVRLA) Code of Conduct

These codes cover cars and commercial vehicles offered for rental.
They provide that:
a. Cars should be bought new and not be less than three years old when leased or with under 60,000 miles on the clock. Commercial vehicles age is not specified but mileage will depend on the weight.
b. Complaints should be made to the rental company first. Thereafter BVRLA has a conciliation service where it promises to give consumers a decision within 30 working days. Arbitration is not available.