london half britons support second vote whether leave european union majority think government may pay much money eu open way trade talk accord new opinion poll poll publish mail sunday newspaper find 50 percent people support another vote final term britain exit deal 34 percent reject another referendum 16 percent say know newspaper say first major opinion poll since last week media report britain prepare pay 50 billion euros 59 billion help move talk future trade pact eu mike smithson election analyst run www.politicalbetting.com website former liberal democrat politician say twitter first time pollster record back second brexit referendum since referendum 2016 high profile opponents britain exit french president emmanuel macron former british prime minister tony blair billionaire investor george soros suggest britain could change mind avoid say disastrous british economy blair say sunday try reverse brexit claim leave campaign national health service get extra 350 million pound week britain leave eu prove false blair tell bbc government aim brexit negotiations fail want leave single market retain benefit voters change mind reversible do do say facts change think people entitle change mind brexit supporters argue attempt halt exit process would anti-democratic accord survation poll 11 percent voters say britain pay 50 billion pound quit eu 31 percent say government pay anything poll also find 35 percent survey say would bad financially brexit 14 percent say would good online poll carry research firm survation interview 1,003 adults britain 30 november december survation say carry poll media organizations include bbc sky news daily telegraph guardian poll agency correctly predict narrow vote rule conservative party opposition labour party summer general election result may lead minority government 0.8411 euros half britons support second vote brexit poll find