I wonder if you could have some kind of personal allowance, say 10 flights a year and any more than this you start getting taxed heavily for them. That would hi

I wonder if you could have some kind of personal allowance, say 10 flights a year and any more than this you start getting taxed heavily for them. That would hit frequent flyers more. Banning flights where an equivalent 2.5hour train journey exists sounds good, but might the train lines then ramp up the price if there no alternative flight?