Question to the HM Treasury:
To ask Her Majesty's Government whether the calculation for the increased passenger duty on long-haul flights will be made on the shortest distance between the UK and the intended destination, or the route to be taken by the airline concerned.
Distance bands within Air Passenger Duty are based on the distance from London to the destination country’s capital city.
Distance to a country's capital city is used as a straightforward proxy for distance to that country, making it as easy as possible to administer the tax – as well as improving transparency for the end consumer.