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These devices come in a wide range of shapes and sizes, are typically battery-powered and are referred to by many names, such as: E-cigs E-hookahs Electronic nicotine delivery systems (ENDS) JUULs Mods Tank systems Vapes Vape pens Many e-cigarettes contain nicotine, the addictive substance found in combustible tobacco cigarettes

Typically, e-liquid formulations contain nicotine, flavoring agents, water, glycerin and propylene glycol

Pregnant women, or women who have had a baby in the past 12 months are entitled to free NHS dental care (you'll need a Maternity Exemption Certificate from you midwife or doctor)

Smoking is prohibited in enclosed indoor workplaces (unless otherwise stated within the law)