A former aide to Theresa May said a heavily criticized 2013 operation - vans driving around racially diverse parts of London with the message "go home or face arrest" - had gone ahead without her knowledge or approval. Leaked emails undermine that story https://t.co/vBh01pf4Fa pic.twitter.com/NoQMeLok7b— Bloomberg Politics (@bpolitics) April 20, 2018