UK airports - green arguments and calls for expansion
13 March 2012 Last updated at 16:08 GMT
The government is days away from publishing its vision for the future of Britain's airports.
The aviation industry claims expansion will help the economy, but environmental groups say the green agenda is being chucked out in favour of growth.
BAA chief executive Colin Matthews, Transport for London deputy chairman Daniel Moylan and Paul de Zylva of Friends of the Earth gave their views.