https://www.gov.uk/guidance/applying-for-a-licence-to-import-or-export-ozone-depleting-substances?step-by-step-nav=b9347000-c726-4c3c-b76a-e52b6cebb3eb
You must have a licence to import or export ozone-depleting substances (ODS) to and from Great Britain (England, Scotland and Wales).
for aozone depletingapplyinglicenceimport