LONDON—British Prime Minister Theresa May’s Conservative Party began gathering for its annual conference on Sept. 29, with bitter divisions over her Brexit plans rising to the fore, raising doubts about her own future.
Britain is due to leave the European Union on March 29, 2019, but the terms of the departure remain unclear. May, under fire from critics in Brussels, opponents at home and some lawmakers in her own party, has said talks on a divorce deal are at an impasse.
