* The Treasury doubled air passenger duty, from £5 to £10.²⁵ This merely reversed the cut it made in 2001. In its white paper on aviation, the transport department investigated the effect of a bigger levy – a 100 per cent fuel tax. This, it found, would increase the airlines’ prices by 10 per cent.²⁶ But the growth of the no-frills carriers would be sufficient to offset it, ensuring that there was no suppression of demand.²⁷