In his response, Mr Sharp said that under the law, the possession and importation of cannabis was ‘wholly unlawful except for purposes of research or other special purposes’.

He added: ‘In principle, the minister can lawfully issue a licence for the possession of cannabis for medicinal use, but there would need to be evidence of some genuine and special medical benefit that would justify the issuing of a licence for a special purpose. The term special purposes is a high bar to satisfy.’