The Environmental Permitting (England and Wales) Regulations 2010 provide an exemption (T28) for the denaturing of controlled drugs at the premises of production.
However there is no exemption for the denaturing of controlled drugs (CDs) at a place other than a place of production. So the denaturing of waste CDs returned by patients or healthcare workers, or of drugs brought together at a collection point or denaturing sessions, are not covered by an exemption.
There is an over-riding public health requirement to ensure such drugs are made safe as soon as possible. The activity poses a low environmental risk as long as the requirements set out in this guidance are followed.