 The most successful example of the country ’ s economic evolution is the international financial services industry based in London . Within this sector aviation services are seen as critically important for both businesses and their clients , even in the era of video @-@ conferencing . London ’ s air transport services are widely regarded within the London business community surveyed by the OEF to provide a competitive advantage over the rest of Europe , and expansion of airport capacity in the South East has significant support . Whilst these economic contributions are not disputed by environmental groups , they are not considered as sufficient justification to support further growth in air transport services which would primarily service increased demand for leisure travel rather than a business travel market which is already well served . 
