ALMOST nine in 10 of Britain's vape shops are willing to sell e-cigarettes to non-smokers, against the industry code of conduct, the results of an undercover investigation suggest.

Concerns have been raised that non-smokers could become addicted to nicotine if they start vaping.

The Royal Society for Public Health (RSPH) is urging vape shops to stick by the voluntary code of conduct, which states they should not knowingly sell vape products to anyone who does not or has not smoked before.

The organisation investigated 100 of the 1,700 specialist vape shops in England, Scotland and Wales and said they found 87 per cent are either knowingly or unwittingly prepared to sell e-cigarettes to people who have never smoked or vaped.