SNP

Plan would see most polluting vehicles banned from Central London and 'bad air days' warnings given to Londoners

New figures confirm capacity has risen from to 140MW to 179MW in the past year

Plastic bag use has fallen by 650 million since charge was introduced there a year ago

Scotland's First Minister seeks assurances Westminster will not alter support without agreement from Scottish government ministers

Nicola Sturgeon's party says it would use any post-election influence at Westminster to push for increased ambition on climate change

Richard Black explores how a strong electoral showing for the SNP could have major implications for UK energy and renewables policy