Activists aim to make it “politically toxic” for elected representatives to associate with coal, oil and gas companies.

Parliamentary candidate Noel Matthews, who has sacked candidates accused of supporting far-right figures, previously defended the EDL founder.

Lord Agnew is a shareholder in Equinor, the Norwegian oil and gas firm behind the ‘carbon bomb’ Rosebank oil field.

Legal challenges could delay the EPA’s ability to enact the measures, which coincide with Louisiana activists' fight against projects poised to increase air pollution.