Plans to stop young people born since 2009 ever smoking are being debated and will be voted on later.
Rishi Sunak’s bill aims to create the UK’s first smoke-free generation in a major public health intervention.
The Tobacco and Vapes Bill would ensure anyone turning 15 from this year would be banned from buying cigarettes, and also aims to make vapes less appealing to children.
A number of Tory MPs have told the BBC they won’t back the bill.
The BBC understands that Business and Trade Secretary Kemi Badenoch is considering voting against the plans.
Governments banning drugs just creates dangerous black markets and criminals instead of doing their job of establishing and regulating markets with medical support for addicts. Arresting drug users for using drugs is similar to arresting people for eating Doritos because some people overeat them. You can do it, but it’s not going to stop people from eating Doritos it just means more people will suffer making and distributing the Doritos. Nobody is going to force you to eat the Doritos, and if you’re eating too many you’ll benefit by talking to a doctor not a judge.