In the UK, nicotine vaping products are regulated under the Tobacco and Related Products Regulations (TRPR). These regulations set specific limits and requirements, including a maximum nicotine strength of 20mg/ml, a maximum tank size of 2ml for refillable devices, mandatory health warnings on packaging, and ingredient reporting with product notification to UK authorities.
Products that do not comply with these requirements may be considered illicit or non-compliant.

Illicit vaping products may exceed nicotine strength limits, contain larger-than-permitted tank capacities, lack required health warnings, or fail to meet labelling standards. In some cases,
non-compliant products may not have been properly notified or assessed under UK regulatory frameworks.

Consumers can look for indicators of compliant products such as clearly displayed nicotine strength, UK-required health warning statements, manufacturer details and batch information, sealed professional packaging, and appropriate tank size information.

Purchasing from reputable retailers who operate strict age verification policies can help reduce the risk of obtaining non-compliant products.