But they can't actually ban teachers from striking so instead what they are doing is proposing to introduce 'minimum service levels' during strike action, in which teachers who want to strike would instead be forced into school and to work (penalties for disobeying are unclear).
The minimum service levels would see a requirement for various groups of children (estimated to cover 75% of kids) to be in school and receiving an education on strike days, children off school being educated remotely, and if there is a longer period of strikes, for all children to be in school on a rota.
It doesn't seem to occur to the government that a better solution to ensure that children don't miss out on education during strike days would be to work with education unions to avoid strike action by addressing their legitimate concerns.
It also doesn't seem to occur to the government that minimum service levels don't actually happen in schools the rest of the year, and that perhaps they should be spending their time working on fixing the issues in schools rather than this shitty attempt to create yet another 'war with the teacher unions'.
Anyway, there is a consultation on the proposals. It had to be taken down and fixed as the first consultation didn't let you disagree with the proposals, but it has now been updated.
Info here:
https://www.tes.com/magazine/news/general/dfe-teacher-strike-plans-minimum-service-levels-schools
Consultation here:
https://www.gov.uk/government/consultations/minimum-service-levels-msls-in-education