Private emails uncovered by the Telegraph suggest that Sadiq Khan’s office tried to discredit scientists who found that his Ultra Low Emissions Zone policy had a minimal impact on pollution. Here’s an excerpt: In private emails seen by the Telegraph, Shirley Rodrigues, the London Mayor’s Deputy for Environment and Energy, told Professor Frank Kelly she was “really disappointed” that Imperial College had publicised findings questioning the effectiveness of Ulez. Prof. Kelly, a director of