Twenty-one years ago the UK Continental Shelf Act made exploitation of the North Sea possible. Ten years ago the first oil was produced from the Argyll field. Brian Redhead investigates the development of the oil and gas resources with leading oilmen, politicians and analysts. Did successive governments really control the huge oil barons? Have the benefits really come to Britain? When will the bubble burst? Reporter John Forsyth Producers JOHN FORSYTH and LESLIE ROBINSON
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