I thought you may be interested in a report on shale gas and fracking released last week by the House of Commons Library. I have included a link to the report below.

The House of Commons Library research service provides MPs and their staff with the impartial briefing and evidence base they need to do their work in scrutinising Government, proposing legislation, and supporting constituents.

http://researchbriefings.files.parliament.uk/documents/SN06073/SN06073.pdf