United Kingdom›Emerging Threats
Sources & methods↗
Early warning and preparedness

Emerging threats

TD analytical priorities combining national mortality, submitted-sample testing, rapid surveillance, treatment, wastewater and evidence reviews. These are not official national alert levels.

Editorial review: 4 November 2026
Signals assessed12Substances and market presentations
Critical2Nitazenes and Orphines
High priority6Sedatives, ketamine and gabapentinoids
Horizon monitoring4Stimulants, GBL/GHB and Tusi
How to read the assessments

The matrix includes orphines, ketamine, gabapentinoids, methamphetamine, synthetic cathinones and GBL/GHB alongside other signals. These are TD priorities, separate from evidence confidence and direction of change. Qualitative evidence confidence rates the specific dated finding for each signal; it is not a probability or risk score. Inclusion does not establish national prevalence.

Substance / signalThreatMovementGeographyEvidence confidence
Submitted-sample findings

Unexpected contents in submitted products

WEDINOS UK submissions, April 2025–March 2026

Report published 25 August 2026 · evidence checked 12 October 2026

Tablets sold as diazepam

Novel benzodiazepines were identified in place of the expected medicine. Pharmaceutical-style appearance and packaging did not authenticate the tested products.

Products sold as oxycodone

Some submitted samples contained nitazenes. Purchase intent among nitazene-positive samples is a different denominator from all submitted oxycodone or all oxycodone sold.

Products sold as THC, CBD or cannabis vapes

Synthetic cannabinoid receptor agonists were identified in submitted products.

Selected samples, not market prevalence. These are selected analytical findings, not estimates of how common substitution is across the UK market. The existing Orphines and Tusi assessments above cover other documented unexpected mixtures.

▦ Public Health Wales / WEDINOS findings◷ Published 25 August 2026Open source ↗
▦ WEDINOS annual report◷ April 2025–March 2026Open source ↗