From yougov:
The most dramatic split is along the lines of education. 70% of voters whose educational attainment is only GCSE or lower voted to Leave, while 68% of voters with a university degree voted to Remain in the EU. Those with A levels and no degree were evenly split, 50% to 50%.

Age is the other great fault line. Under-25s were more than twice as likely to vote Remain (71%) than Leave (29%). Among over-65s the picture is almost the exact opposite, as 64% of over-65s voted to Leave while only 36% voted to Remain. Among the other age groups, voters aged 24 to 49 narrowly opted for Remain (54%) over leave (46%) while 60% of voters between the ages of 50 and 64 went for Leave.

70%/68% Dramatic? dont fink so!