Brighton Pavilion MP Caroline Lucas has said she is “heartbroken” after Britain voted to leave the EU.

Ms Lucas was speaking after the result had been called in favour of the Vote Leave campaign.

A prominent campaigner for Britain remaining in the EU, Lucas said “This is an absolutely devastating result.”

Brighton voted to remain in the EU with a majority of 69% (100,648), while 31% (46,027) voted to leave.

Ms Lucas said the national polls had “revealed massive divisions within our country.”

After a YouGov poll earlier in the night had predicted that Britain would vote to remain, Vote Leave’s strong performance in rural areas and the North-East swung it back in favour of a UK exit.

“It feels like there are such levels of frustration and alienation and anger and I think that is a real wakeup call to Westminster”, said Ms Lucas.

She called on the government to now look at wider constitutional issues such as the voting system.

“Part of the anger was less to do with the EU per se and more to with a sense of being unheard and unlistened to for so many years”, she said.

The pound sunk to its lowest levels since 1985 as news of Britain’s likely vote to leave the EU came in through the night.

The country's only Green MP said that migration from the EU had helped to bring money into the country but that this had not been “properly shared” under the current government.

“People's very real concerns” had been blamed on immigration, she said.