Schedule 12: Smoke control in England and Wales Part 4: Smoke Control Areas in England: Transitional Provision
This transitional provision ensures that, where a local authority in England has made a smoke control order, any limitations that currently apply by virtue of that order will continue to apply in relation to new Schedule 1A, when those provisions are commenced. This is because if a smoke control order that applies in England makes any such limitations or exemptions from section 20 of the Clean Air Act 1993 these would be of no effect once Schedule 1A comes into force, as section 20 will then only apply in Wales.