One of the backers of a controversial plan for a new interconnector between France and the UK has threatened legal action within weeks against Kwasi Kwarteng’s decision to block the project. Alexander Temerko, an ex-head of Russian oil company Yukos and director of Aquind since 2016, also threatened legal action against trade minister Penny Mordaunt, who has been one of the leaders of the campaign against the cable that would come ashore in Portsmouth in her capacity as a local MP.