Illicit/illegal tobacco refers to any tobacco products sold illegally in the UK, including smuggled genuine products, duty-free cigarettes sold on the black market, and counterfeit or fake tobacco. Illicit tobacco undermines the impact of lifesaving public health measures and sellers often have links with organised crime. This page explains what illicit tobacco is, what the UK is doing to tackle it, and how tobacco companies exploit concerns about illicit trade to undermine tobacco control.