Boris Johnson is to issue a warning to his expected successor Liz Truss not to back away from his plans to wean the UK off fossil fuels with a massive programme of investment in nuclear and renewables.
The outgoing prime minister is expected to breach his pledge to avoid significant spending commitments on his successor by confirming in a speech on Thursday that he has approved a state stake of 20 per cent in the proposed £30bn Sizewell C nuclear plant in Suffolk.
