The Cameron plan which is apparently only a discussion paper at the moment.. Air passenger duty, A £10 flat rate for a short-haul flight and £80 for a business class long-haul flight, to be replaced with a per-flight tax An annual "green air miles allowance" could give people one short-haul flight at a standard tax rate, with any further flights attracting a higher tax Fuel duty and/or VAT to be imposed on all domestic flights for the first time.

According to the Daily politics show the system will work with a personal allowance of approximately 3000 miles. this is enough to fly and return from a European city once but not enough to get across the Atlantic and back.