Fear of immigration drove the leave victory – not immigration itself Top 10 immigration population change after decades of very little immigration. in areas where immigration was lowest. campaign immigration had replaced the economy as the single most worried about how immigration is changing our country and putting which she barely mentioned immigration. argued that the immigration debate was too important to leave to the neither actually promised to cut immigration. Instead they talked only about an Australian-style immigration system Gove and Johnson have also made clear that the new immigration system, privately raised by ministers. The only sure way to cut immigration * Immigration and asylum