Evidence has shown that using nicotine-containing vapes is substantially less harmful than smoking, and it is also an effective tool for quitting smoking.
Vaping is not recommended for non-smokers or young people: if you have never smoked, don't vape.
Using an e-cigarette is not completely without risk, but they are much less harmful than continuing to smoke. In the UK, vapes are tightly regulated for safety and quality. When used as intended, nicotine contained in vaping liquids is relatively harmless.