MPs led by Henry Smith whose Crawley constituency includes Gatwick, have been calling on the government to freeze air passenger duty (APD). They say the Treasury should then carry out an assessment of the effects of the duty.
Many MPs believe the amount air passenger duty raises - £2.6 billion pounds a year - is much less than what it costs in terms of the damage done to trade and tourism.
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Saturday's weather for the east with Philippa
Saturday's weather for the west with Philippa
Memorial events are taking place in tribute to the victims of the Shoreham air crash.