By Liam Gilliver Alcohol-free booze has surged in recent years, as more and more Brits are toying with sobriety (or just trying to get through Dry January). While no-secco and boozeless bubbles make a great alternative for those wanting to celebrate without the impending hangover, a new debate around whether they should be given to children has arisen. While under 18s can legally purchase drinks containing less than 0.5 per cent alcohol by volume (ABV) in hospitality settings, they can’t buy them from supermarkets. But one woman was left torn after her 13-year-old came back from a school frien…