Baroness Valentine argues for expanding London airports
13 July 2011 Last updated at 10:58 BST
The cross-bench peer Baroness Valentine - who speaks for London First - puts the case for further expansion at London's airports, claiming there are good business and environmental reasons for a government rethink.
She welcomes the plan for High Speed Rail 2 to link London to Birmingham - and later further north - but said London really needs more air capacity.
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