LONDON (AP) — A tsunami of uncertainty has engulfed Anna Woydyla, a Polish restaurant worker in London, since Britain voted to leave European Union. Would her two teenage children, who grew up in the United Kingdom, still qualify for loans to study at British universities? The 41-year-old is among hundreds of thousands for European Union workers in Britain who are fearful and confused over what happens next as their adoptive country begins the long process of unwinding its many ties to continental Europe. The immigrants changed the face of Britain, turning London's Kensington neighborhood into a suburb of Paris, changing sleepy English towns like Boston into Baltic enclaves, filling supermarket shelves across the nation with Polish lager and Wiejska sausage. At workplaces and schools across the country, managers have sent out emails to worried foreign staffers and students, assuring them that — for now — nothing has changed. A survey commissioned by the Financial Times found that if Britain's current immigration rules were applied to EU nationals, the overwhelming majority would lose their jobs and be forced to leave the country — catastrophic news for Spanish barristas, Romanian strawberry pickers, German investment bankers and the industries that rely on them. An estimated 850,000 people have left Poland for the U.K.