Inclusion Criteria:  Adults ≥18 years old who are current daily tobacco smokers Current daily tobacco smoker (self-reporting smoking of at least one cigarette per day) Attending the ED for medical treatment (or accompanying a patient attending for medical treatment) Submitting an expired carbon monoxide (CO) breath test reading of more than ≥8 parts per million (ppm).  Exclusion Criteria:  Requiring immediate medical treatment as defined by the treating clinician. In police custody. Known history of allergy to nicotine replacement products. Currently defined as dual users - already using an e-cigarette daily as well as smoking conventional cigarettes. Without the capacity to give informed consent for participation in the study Have taken part in the CoSTED trial already