UK shale gas resources 'greater than thought'
27 June 2013 Last updated at 19:09 BST
UK shale gas resources may be far greater than previously thought, a report for the government says.
The British Geological Survey was asked to estimate how much gas is trapped in rocks beneath Lancashire and Yorkshire.
It said there could be 1,300 trillion cubic feet at one site alone, but it is unclear how much could be extracted.
Ministers are set to announce financial benefits for communities where fracking - the controversial extraction technique - takes place.
John Moylan reports.