More than half a million people in the UK have signed an online petition calling for a second EU referendum, meaning it could be debated in Parliament.
Despite the UK's decision to leave the union, a poll shows most young people opted to remain.
Crowds of Remain campaigners have protested overnight against the UK's exit from the EU.
They demonstrated in Glasgow and Edinburgh and outside the offices of the Sun and Sunday Times in London.
The result has left many people angry, including London which effectively voted to 'Remain'.
These people in Hackney are bitterly disappointed:
However, these people in Harlow in Essex have been explaining why they voted to leave: