MANCHESTER, ENGLAND - OCTOBER 06:  Home Secretary Theresa May leaves the stage after delivering her keynote speech to delegates during the Conservative Party Conference on October 6, 2015 in Manchester, England. Home Secretary Theresa May addressed delegates on day three of the Conservative Party conference at Manchester Central  and warned that it is 'impossible to build a cohesive society' and the UK needs to have an immigration limit.  (Photo by Christopher Furlong/Getty Images)