Mayor says he will contribute £15,000 to local authorities' planned legal challenge, if Heathrow expansion is given green light
George Osborne reportedly committed to downgrading plans over fears they will prove a tough sell
Shadow housing minister outlines plans that would see moves to encourage staff to cut their carbon footprint count towards businesses' emission reduction targets
As they gather this week in Birmingham, the Tories look set to revive their "vote Blue, go Green" message, and the government seems at a loss on how to respond
Conservatives pledge to scrap plans for a Heathrow third runway in favour of a £20bn high-speed rail link between London, Birmingham, Leeds and Manchester
Prime Minister warned "incremental change will not do"
Report claims policy measures are failing to match environmental rhetoric
"We are not going to drop the environmental agenda in an economic downturn"
Lobby group claims Tories entering "critical few months" for green credentials