Club Soda, the mindful drinking movement, is once again holding the UK’s only festival for mindful drinkers this summer, at its favourite east London hangout. Spitalfields Market. Seven million people in the UK are sober curious, and sales of adult low and no alcohol drinks are at an all-time high. With that in mind, Club Soda will be showcasing 40 of the best tasting adult-orientated drinks brands in the industry, some recognisable from previous events and others which are brand…