Boris Johnson's brother Jo Johnson has said he is quitting as a Tory MP and minister. He has spent nine years as an MP for Orpington and was appointed earlier this year by his brother as Minister of State at the Department of Business, Energy and Industrial Strategy and Department of Education. In a tweet, he wrote: "It’s been an honour to represent Orpington for 9 years & to serve as a minister under three PMs. "In recent weeks I’ve been torn between family loyalty and the national interest - it’s an unresolvable tension & time for others to...