TOPSHOT - Britain's Prime Minster Theresa May is pictured sitting with her ministerial red box, as she prepares her keynote speech in her hotel room, in Birmingham, central England, on October 2, 2018, on the eve of her speech to delegates at the annual Conservative Party Conference tomorrow. - EU workers coming to settle in Britain after Brexit will require visas and the preference will be for high-skilled immigrants, Prime Minister Theresa May said on Tuesday. (Photo by Stefan Rousseau / POOL / AFP)