The outcome of the British vote to leave or remain in the European Union (EU) will be known in Australia around 2pm on Friday. "Britain's Prime Minister David Cameron meets supporters on a walkabout after he addressed a Vote Remain rally in Bristol".

Campaigners on both sides of the crucial vote over whether Britain should remain in the European Union crisscrossed the country Wednesday, their last day to win support from the undecided.

Prime Minister David Cameron outlined his vision for a future with Britain retaining its place in the 28-nation bloc, bristling at the notion that the country would be headed in the wrong direction if it stayed in.

He flatly rejected the charge that the institution is moribund. "We are not shackled to a corpse," Cameron told the BBC. "You can see the European economy's recovery.

It's the largest single market in the world". The executive chairman Seven Group holdings, said people in the United Kingdom had voted to protect their borders, following the recent influx of migrants into the EU.

"The Brits have decided to do what Australians have already decided to do, which is to protect our borders," Mr Stokes told Fairfax Media. "The major concern was being able to protect their borders.

They voted for that over their economic concerns." Mr Stokes did not think there would be much impact on trade with Australia. "Sensible people will negotiate sensible outcomes," he said.

"And there is two years to negotiate a trade exit for Great Britain. I would expect by the time they finish [negotiating] a trade agreement will be favourable for both parties and life will go on.