Environmental lawyers have submitted an official complaint against supermajor BP for “greenwashing” with low-carbon claims in its adverstising, according to ClientEarth, a non-profit legal group.

The NGO is calling for regulation covering all fossil fuel advertising, which it argues should come with “a tobacco-style health warning about the dangers to people and the planet”.

ClientEarth filed the BP complaint under OECD guidelines, an international set of rules governing corporate conduct.