Ed Davey says windfarms important at time of global insecurity with western world in standoff with Moscow over Crimea

Britain’s growing fleet of offshore windfarms provides a vital national security role as the western world engages in a stand-off with Moscow over Ukraine, Ed Davey has said.

Speaking on Tuesday after German group Siemens said it would create 1,000 UK jobs in wind turbine production and installation, the energy and climate change secretary said he believed a long-promised renewable energy revolution in the North Sea had finally taken off.