Cooperating institutions: Environmental Management Authority, Meteorological Office, Institute of Marine Affairs, Forestry Department, Water and Sewerage Authority, Ministry of Works, Town and Country Planning Department, various non-governmental organizations (NGOs) and public communities.

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In 1935 London's regional planners proposed the Metropolitan Green Belt and the 1947 Town and Country Planning Act encouraged local authorities to protect the land around towns and cities from building.

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The prosecutions were pursued privately by the council under Section 178 of the Town and Country Planning Act in which it as an "offence to wilfully obstruct" a local planning authority taking enforcement action.

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The justices ruled that there had been no change of use within the section of the Town and Country Planning Act, which imposes a four-year time limit for taking enforcement action against breaches of planning control.

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As usual with these inquiries, they're starting with experts - including Dr Adam Marshall of the British Chambers of Commerce, Jessica Bauly, Head of Infrastructure at the CBI, Dr Hugh Ellis, Chief Planner, Town and Country Planning Association, and Alex Morton, Senior Research Fellow, Policy Exchange.

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