Claims must be subtantiated to highlight vehicles' are only zero emission when being driven, latest ASA ruling states
Khan says new funds can help play a key role in tackling 'the triple dangers of toxic air pollution, climate change and congestion'
Eighty-eight mayors and council leaders have now committed to the UK100’s pledge to achieve net zero by 2045
City Hall unveils plans to scope out market for Power Purchase Agreements to meet Underground's electricity demand