Labour's Northern Mayoral Candidates Hold Joint Train Press Conference

MANCHESTER, ENGLAND - SEPTEMBER 01: (Exclusive Coverage) MP's Andy Burnham (R) and Steve Rotheram, Labour's mayoral candidates in Greater Manchester and the Liverpool city-region respectively, arrive at Manchester Piccadilly Station on September 1, 2016 in Manchester, England. During a joint press conference in Manchester, Burnham and Rotheram challenged the Prime Minister to honour pledges made to HS2 and HS3 rail investment and the Northern Powerhouse project. (Photo by Christopher Furlong/Getty Images)