london british government stop dream way brexit negotiations start get realistic likely outcome divorce talk european union say jim neill former goldman sachs economist prime minister theresa may quietly oppose brexit ahead referendum formally notify bloc britain intention leave divorce talk way botch gamble snap election june undermine may authority inside conservative party eu diplomats say british negotiate stance remain unrealistic unclear neill coin term bric 2001 describe economic clout brazil russia india china would challenge west dominance tell bbc radio divisions inside conservatives drive brexit policy divisions political party particularly inside rule conservative one continue dominate policy discussion unfortunate wish would change say neill june 23 2016 referendum voters unite kingdom back leave eu margin 51.9 percent 48.1 percent neill resign job treasury minister may government year ago say british negotiators attempt cherry pick exit deal unrealistic last thing eu want big country leave consequences point would others might think well easy get away bad bits keep good bits say frequently seem negotiators seem appreciate neill say may say make brexit success hop eu agree deal allow side continue trade freely possible stop fight brexit get real jim o'neill tell uk