(2) how much revenue has been raised by aviation taxes on the use of private helicopters in each year since 1997.
Some helicopter flights, such as those carrying more than 19 chargeable passengers, are liable to air passenger duty.
For all aircraft, including helicopters, duty is payable on aviation gasoline and on aviation turbine fuel used for private pleasure flying.
Figures for the proportion of revenue for these taxes raised from helicopters are not available. There are no other taxes specific to aviation.