Heathrow

Sajid Javid, Osborne's parliamentary private secretary, is backing the Free Enterprise Group seeking extra runways

Prime minister slammed for "weak" reply to question over whether it will honour a manifesto commitment ruling out a third runway

Heathrow expansion proposals can be submitted and upcoming government policy revamp could head off BAA legal action

Kings Cross development installs first of three gas-powered CHP units, as Heathrow plans summer launch for Turboden biomass system

Independent mayoral candidate wants environmental considerations to be "an intrinsic part of the way London operates"

Ministers to rethink decision to rule out runway after warning that trade will move elsewhere unless airport expanded

Reports suggest Conservatives and Lib Dems are already clashing over controversial plans for new airport

Boris Johnson angers green groups by claiming a new South-East hub is needed to avoid exporting jobs and emissions abroad

Conservation and residents' groups angered by mayor Boris Johnson's support for more runway capacity

Farmgen starts work on £30m anaerobic digestion project as Heathrow signs deal to turn food waste into fertiliser