Rishi Sunak announced the smoking ban at last year's Conservative conference in Manchester.
The Tories have criticised Labour’s plan to ban smoking outside pubs just months after saying they wanted to make it completely illegal.
Rishi Sunak announced at last year’s Tory conference that anyone currently aged 15 and under would never be able to legally buy tobacco.
The former prime minister’s decision to call an early election meant he ran out of time to turn the policy into law.