Rishi Sunak has pledged to raise the legal age for buying cigarettes by one year every year in a crackdown on smoking.

The prime minister said the proposed legislation would mean a “14 -year-old today will never legally be sold a cigarette and that they and their generation can grow up smoke-free”.

He said the changes will be subject to a vote in parliament but this will be a free vote, as was the ban on smoking in public places and raising the smoking age to 18.

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“There will be no government whip. It is a matter of conscience,” he said.

Addressing the annual Tory party conference, Mr Sunak also promised to restrict the availability of vapes under plans to “put the next generation first”.

On smoking, he said it would not be fair “to take away the rights of anyone to smoke who currently does”.

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However he said more could be done stopping teenagers taking up cigarettes in the first place.

“I propose that in future we raise the smoking age by one year every year,” he told party delegates in Manchester.

“That means a 14-year-old today will never legally be sold a cigarette and that they and their generation can grow up smoke free.”

He added: “People take up cigarettes when they’re young – four in five smokers have started by the time they’re 20.

“Later the vast majority try to quit. But many fail because they’re addicted and they wish they had never taken up the habit in the first place.

“And if we could break that cycle, if we could stop the start, then we would be on our way to ending the biggest cause of preventable death and disease in our country.”

Downing Street said it expects that the plans will mean up to 1.7 million fewer people smoking by 2075.

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On vapes, the prime minister said: “As any parent or teacher knows, one of the most worrying trends right now is the rise in vaping amongst children – one in five children have used vapes.

“We must act before it becomes endemic.

“So we will also bring forward measures to restrict the availability of vapes to our children, looking at flavours, packaging displays and disposable vapes.”

Number 10 said a consultation on vaping will examine restricting the flavours and descriptions of vapes so that vape flavours are no longer targeted at children; regulating sale displays of vapes; regulating packaging; and restricting the sale of disposable vapes.

Ministers have faced repeated calls to ban vapes to help protect children and reduce the significant environmental impact of the single-use products.

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