Alcohol Free wines have just natural ingredients and but techniques to ensure it is alcohol free vary. This includes removing sugar pre fermentation to more sophisticated techniques of spinning the alcohol out through cones. Across Europe beers below 0.5% ABV are classed as alcohol free. In the UK drinks that are between 0.05% and 0.5% ABV are classed as non-alcoholic.  

Gluten Free Explained

Gluten is a protein compound found most commonly in the grains wheat, barley, rye and oats. Wheat and barley are often key ingredients in producing drinks such as beer and in sealing wine casks. Gluten free drinks avoid using such products.  To label as gluten free the product must have below 20 parts per million of gluten, which is barley a trace!