LONDON, United Kingdom – April 2017: In April 2017, the National Crime Agency (NCA) issued a warning of fentanyl analogues mixed with heroin. Prior to this warning, the NCA, in a joint operation with West Yorkshire Police, discovered a laboratory suspected of manufacturing fentanyl and carfentanil. In parts of north-eastern England, the NCA has recently observed cases where fentanyl analogues were introduced as an additive to heroin. Public Health England also issued a drug alert to medical and emergency services, public health and drugs services, following recent overdose deaths in Yorkshire linked to the consumption of heroin mixed with fentanyl and carfentanil.

For more information, please see:
News announcement from the National Crime agency “UK drug users at risk from dangerous heroin mix”
National Crime Agency report on “Recent Deaths Possibly Linked to Fentanyl”
UNODC-SMART: Fentanyl and its analogues explored in the Global SMART Update 17