A report in the Daily Telegraph said ministers were considering handing the wells to the British Geological Survey rather than sealing them.

Cuadrilla Resources Chief Executive Francis Egan said: "We note with interest the reports that the Prime Minister wants ministers to step in to stop the UK's only two viable shale gas wells being filled with concrete in the middle of an energy crisis."

"We remain open to any other proposals or ideas the Government may have, but as things stand nothing has changed."

(Reporting by Paul Sandle; editing by William James)