The Greater London Authority, the South East England Regional Assembly and the East of England Regional Assembly met for an advisory forum earlier this month to discuss the BAA plans.
A key resolution of the forum was to encourage the government to place a greater emphasis on regional airports taking on air traffic from their own regions.
Advisory forum chair Keith Mitchell (Con) asserted that most people using airports in the south-east were not local residents - a problem that will only be compounded by the construction of more runways in the area.
London deputy mayor Nicky Gavron [Lab] agreed.
'Where new capacity is built, it must support regional policy.'
Ms Gavron added that the BAA plans to scatter three runways across three south-east airports 'do not reflect regional priorities and continues the 'predict and provide' approach to airport planning'.