How Old Do You Have to Be to Vape? UK Regulations Royal Flush Vape Vaping UK How Old Do You Have to Be to Vape? How Old Do You Have to Be to Vape in the UK? Can I Vape at 16? What is the Legal Age for Vaping in the UK? The landmark Tobacco and Vapes Act is now law. Today's children will never legally be sold cigarettes. We're creating the UK's first smoke free generation and protecting children from the harms of smoking