E-Lites: WHO e-cigarette advice 'troubling'
26 August 2014 Last updated at 13:11 BST
The World Health Organization has called for a range of tough regulations to restrict the use of e-cigarettes.
In a report, the health body recommended banning their use indoors and said sales to children should stop.
But Charles Hamshaw-Thomas, the director of corporate affairs at manufacturer E-Lites, said he felt a ban on indoor use was "troubling".
He said such a move might have a negative impact in the campaign to get smokers to quit.