“We cannot sit back and accept a blanket message from Public Health England that vaping is 95% less harmful than tobacco smoking because (a) nobody knows exactly what substances are in these liquids, [...] claimed amongst other things, a letter by Warren Lenney and 15 other paediatric healthcare professionals.

In response to these claims, NNA Vice Chair Louise Ross, pointed out that the original letter was “an argument based on error and supposition” and that it would be more helpful to “consider the positive effect of parents who smoked switching to vaping”.