Prime Minister David Cameron on Tuesday made a last-minute appeal to British voters to reject an "irreversible" decision to leave the European Union, urging older voters to consider the consequences for young people.
Addressing voters via British media outside his official residence in London's Downing Street, 49-year-old Cameron said he wanted to appeal "very directly to those of my generation and older" ahead of Thursday's in-out referendum.
He urged them to "remember the hopes and dreams of your children and grandchildren" and that they "can't undo the decision" on a British EU exit, or Brexit.
"The next generation will have to live with the consequences far longer than the rest of us," Cameron said. "It is irreversible. We will leave Europe for good."
Several opinion polls have suggested that support for a Brexit is stronger among older British people.
In another appeal to voters in The Sun, Britain's best-selling tabloid, Cameron promised to push for more EU reforms if there is a majority for Remain in the referendum.
He negotiated a package of reforms in February that he said would give Britain a "special status" in the EU.
"Britain will be in a very enhanced position [after a vote to Remain]," he told the pro-Leave newspaper. "There is no doubt that a British prime minister with a mandate from the  election, a re-negotiation, and a referendum would have the ability in Europe to drive forward changes that are needed."
"We have got to deliver all the things that we said, plus I hope more," Cameron said. "We are re-opening the free movement directive."