I keep trying to resist joining this, but stopping any new licenses wouldn't actually change much as far as emissions go, as the increase in energy use required for the other initiatives proposed for Net Zero would mean we'd need to import it from somewhere else that is liable to have less environmental controls, at potentially a higher cost, which would compound the financial and environmental hit.
It's not an option until we have a programme in place to provide a credible alternative, and we're a long way off that.