Among the report's conclusions was that without a comprehensive and aggressive bird management programme incorporating careful and considered airport design, appropriate habitat management and active bird control, an airport could not operate safely at Cliffe.

BBC: Bird danger could halt Cliffe plans

Mrs May's letter constituted a "supplementary" response to the committee's 2010 report into firearms control, which was prompted by the murder of 12 people in Cumbria by gunman Derrick Bird.

BBC: Political reporter, BBC News